PDS_VERSION_ID = PDS3
DATA_SET_ID = "LRO-L-CRAT-3-CDR-CALIBRATED-V1.0"
RECORD_TYPE = STREAM
OBJECT = TEXT
NOTE = "Release notes and errata for this dataset"
PUBLICATION_DATE = 2024-06-14
END_OBJECT = TEXT
END
The PDS standards do not specify where to store the required MD5
checksum file for a volume. We have placed it in the root dircetory
of the volume with the file name "CHECKSUMS.TXT". This may be
considered invalid by some verifiers.
Users are encouraged to provide comments to the PDS Geosciences Node
if errors are found either in data or in documentation in this archive.
Please send comments by e-mail or U.S. mail to the Geosicences Node:
PDS Geosciences Node
Washington University
Dept. of Earth and Planetary Sciences
1 Brookings Drive
St. Louis, MO 63130
314-935-5493
Web: http://pds-geosciences.wustl.edu
Email: geosci@wunder.wustl.edu
In SOFTWARE/PIPE2.LBL there are two variances from PDS standards. The
COMPRESSED_FILE object does not contain the required element FILE_RECORDS.
Also, the label contains the keyword REVISION_ID which is not in the PDS
data dictionary. These variances should not affect the usability of the
data.
*****************************************************************************
Note: 2014-10-20 (updated 2015-12-15):
This dataset was originally delivered as part of the LROCRA_2XXX archive
volume, which included CRaTER EDR, CDR, and DDR data.
This following contains the original release notes and errata for the entire
archive volume LROCRA_2XXX archive volume up to 2015-12-15:
During the course of the Lunar Reconnaissance Orbiter (LRO) mission the CRaTER
science team may update previously released data products or documentation.
Updates may occur due to changes in calibration data or procedures. Updates will
be reported in this file. Older versions of data and documentation will not be
retained in the archive.
Section A of this file contains an entry for each LRO release with general
information about the contents of the release, updates to previously released
data, and known errata. Entries are ordered from most recent to oldest data
release.
Section B of this file contains general notes, concerning the archive as a
whole.
******** SECTION A ********
RELEASE NUMBER: 59
RELEASE DATE: 2024-09-13
DATA COVERAGE: 2024-04-01 to 2024-06-30 for RDR Products (FIFTH EXTENDED SCIENCE
MISSION Phase); 2009-06-19 to 2023-03-31 for EDR Products (ALL Mission Phases)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: EDR
Notes: High winds at White Sands resulted in a loss of some data files on DOYs
171 and 172. The CRaTER pipeline was able to process part of DOY 171 but was
unable to process any files from DOY 172, probably due to the incomplete
definitive spice orientation file for that day.
This delivery includes the final versions of the PDS4-compliant EDR ("L0") files
covering the period from LRO launch through the end of 2022, as well as final
versions of the PDS4-compliant EDR files covering 2023 DOY 001 through DOY 090,
for which earlier test versions of PDS4 files were delivered.
RELEASE NUMBER: 58
RELEASE DATE: 2024-06-15
DATA COVERAGE: 2024-01-01 to 2024-03-31 for EDR and RDR Products (FIFTH
EXTENDED SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
Notes: On DOY 008 the D2 detector experienced a period of high electronic
noise from approximately 00:15 UT to 06:00 UT. Of note is that noise
levels briefly reached uncommon and possibly exceptional levels during a few
bursts lasting less than a minute each between 02:40 UT and 02:55 UT. Noise
levels have since returned to normal. It is unclear what caused the unusually
high and brief peaks, although the phenomenon did occur during the declining
phase of a moderate solar particle event, combined with instrument
temperatures which were at the extreme high end of the normal range for the
LRO mission.
RELEASE NUMBER: 57
RELEASE DATE: 2024-03-15
DATA COVERAGE: 2023-10-01 to 2023-12-31 for EDR and RDR Products (FIFTH
EXTENDED SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
Notes: No known errors or variances.
RELEASE NUMBER: 56
RELEASE DATE: 2023-12-15
DATA COVERAGE: 2023-07-01 to 2023-09-30 for EDR and RDR Products (FIFTH
EXTENDED SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
Notes: The processed data for the period 2023-07-01 to 2023-09-30 contains one
period of data which was recorded in elevated rate mode.
At 2023-07-18 01:01 UTC (DOY 199) CRaTER transitioned into elevated rate mode
due to a large solar particle event. In elevated rate mode, CRaTER only records
events with two or more detector coincidences. Due to variations in particle
fluxes during such events, CRaTER made several transitions into and out of
elevated rate mode. The last transition out of elevated rate mode occurred at
2023-07-18 06:47 UTC. In the MODE_CHANGES.TAB file, only the first transition
in to elevated rate mode and the last transition out of elevated rate mode are
listed for this particle event.
RELEASE NUMBER: 55
RELEASE DATE: 2023-09-15
DATA COVERAGE: 2023-04-01 to 2023-06-30 for EDR and RDR Products (FIFTH
EXTENDED SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
Notes: No known errors or variances.
RELEASE NUMBER: 54
RELEASE DATE: 2023-06-15
DATA COVERAGE: 2023-01-01 to 2023-03-31 for EDR and RDR Products (FIFTH
EXTENDED SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
Notes: The processed data for the period 2023-01-01 to 2023-03-31 contains one
period of missing CRaTER EDR/RDR data.
Due to problems in collecting the data, DOYs 057 and 058 are not included in the
archive.
RELEASE NUMBER: 53
RELEASE DATE: 2023-03-15
DATA COVERAGE: 2022-10-01 to 2022-12-31 for EDR and RDR Products (FIFTH
EXTENDED SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
Notes: The processed data for the period 2022-10-01 to 2022-12-31 contains one
period of missing CRaTER EDR/RDR data.
On 2022-11-08 (DOY 312) LRO instruments were turned off to conserve power
during a total lunar eclipse. No CRaTER data was collected for ~18 hours.
RELEASE NUMBER: 52
RELEASE DATE: 2022-12-15
DATA COVERAGE: 2022-07-01 to 2022-09-30 for EDR and RDR Products (FOURTH AND
FIFTH EXTENDED SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
Notes: No known errors or variances.
RELEASE NUMBER: 51
RELEASE DATE: 2022-09-15
DATA COVERAGE: 2022-04-01 to 2022-06-30 for EDR and RDR Products (FOURTH
EXTENDED SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
Notes: The processed data for the period 2022-04-01 to 2022-06-30 contains one
period of missing CRaTER EDR/RDR data.
On 2022-05-15 to 2022-05-16 (DOY 135-136) LRO instruments were turned off to
conserve power during a total lunar eclipse. No output could be generated for
DOYs 135 and 136.
RELEASE NUMBER: 50
RELEASE DATE: 2022-06-15
DATA COVERAGE: 2022-01-01 to 2022-03-31 for EDR and RDR Products (FOURTH
EXTENDED SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
Notes: The processed data for the period 2022-01-01 to 2022-03-31 contains one
period of missing CRaTER EDR/RDR data.
On 2022-02-02 and 2022-02-03 (DOYs 033 and 034) an anomaly resulted in
permanent loss of some LRO data files. This dataset contains no data for this
period.
RELEASE NUMBER: 49
RELEASE DATE: 2022-03-15
DATA COVERAGE: 2021-10-01 to 2021-12-31 for EDR and RDR Products (FOURTH
EXTENDED SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
Notes: The processed data for the period 2021-10-01 to 2021-12-31 contains two
periods of missing CRaTER EDR/RDR data.
On 2021-11-16 (DOY 320) LRO entered sun-safe mode due to a Single Event Upset.
All instruments were automatically powered down, and CRaTER collected no data
for approximately 1 day. There are no EDR or RDR products for day 321.
On 2021-11-19 (DOY 323) LRO instruments were turned off to conserve power
during a total lunar eclipse. No CRaTER data was collected for ~13 hours.
RELEASE NUMBER: 48
RELEASE DATE: 2021-12-15
DATA COVERAGE: 2021-07-01 to 2021-09-30 for EDR and RDR Products (FOURTH
EXTENDED SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
Notes: No known errors or variances.
RELEASE NUMBER: 47
RELEASE DATE: 2021-09-15
DATA COVERAGE: 2021-04-01 to 2021-06-30 for EDR and RDR Products (FOURTH
EXTENDED SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
Notes: The processed data for the period 2021-04-01 to 2021-06-30 contains one
period of missing CRaTER EDR/RDR data.
On 2021-05-26 and 2021-05-27 (DOY 146, 147) LRO instruments were turned off
to conserve power during a total lunar eclipse. No CRaTER data was collected
for ~24.0 hours.
RELEASE NUMBER: 46
RELEASE DATE: 2021-06-15
DATA COVERAGE: 2021-01-01 to 2021-03-31 for EDR and RDR Products (FOURTH
EXTENDED SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
Notes: No known errors or variances.
RELEASE NUMBER: 45
RELEASE DATE: 2021-03-15
DATA COVERAGE: 2020-10-01 to 2020-12-31 for EDR and RDR Products (FOURTH
EXTENDED SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
Notes: No known errors or variances.
RELEASE NUMBER: 44
RELEASE DATE: 2020-12-15
DATA COVERAGE: 2020-07-01 to 2020-09-30 for EDR and RDR Products (FOURTH
EXTENDED SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
Notes: No known errors or variances.
RELEASE NUMBER: 43
RELEASE DATE: 2020-09-15
DATA COVERAGE: 2020-04-01 to 2020-06-30 for EDR and RDR Products (FOURTH
EXTENDED SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
Notes: No known errors or variances.
RELEASE NUMBER: 42
RELEASE DATE: 2020-06-15
DATA COVERAGE: 2020-01-01 to 2020-03-31 for EDR and RDR Products (FOURTH
EXTENDED SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
Notes: No known errors or variances.
RELEASE NUMBER: 41
RELEASE DATE: 2020-03-13
DATA COVERAGE: 2019-10-01 to 2019-12-31 for EDR and RDR Products (FOURTH
EXTENDED SCIENCE MISSION Phases)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
The processed data for the period 2019-10-01 to 2019-12-31 contains two
periods of missing CRaTER EDR/RDR data. The CRaTER pipeline was unable to
generate processed files for DOYs 346 or 347 (2019-12-12, 2019-12-13).
Additionally, on 2019-12-19 and 2019-12-20 (DOY 353 and 354) instruments
on LRO were turned off. No CRaTER data was collected for ~11.5 hours.
RELEASE NUMBER: 40
RELEASE DATE: 2019-12-16
DATA COVERAGE: 2019-07-01 to 2019-09-30 for EDR and RDR Products (THIRD AND
FOURTH EXTENDED SCIENCE MISSION Phases)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
The processed data for the period 2019-07-01 to 2019-09-30 contains one
period of missing CRaTER EDR/RDR data. On 2019-07-16 and 2019-07-17
(DOY 197, 198) instruments on LRO were turned off in order to conserve power
during a total lunar eclipse. No CRaTER data was collected for ~11.0 hours.
RELEASE NUMBER: 39
RELEASE DATE: 2019-09-13
DATA COVERAGE: 2019-04-01 to 2019-06-30 for EDR and RDR Products (THIRD EXTENDED
SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
The processed data for the period 2019-04-01 to 2019-06-30 contains one
period of missing CRaTER EDR/RDR data. On 2019-05-05 (DOY 125) ~2 hours of
science data and ~2 separate hours of housekeeping data were lost.
RELEASE NUMBER: 38
RELEASE DATE: 2019-06-15
DATA COVERAGE: 2019-01-01 to 2019-03-31 for EDR and RDR Products (THIRD EXTENDED
SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
The processed data for the period 2019-01-01 to 2019-03-31 contains one
period of missing CRaTER EDR/RDR data. On 2019-01-21 (DOY 021)
instruments on LRO were turned off in order to conserve power
during a total lunar eclipse. No CRaTER data was collected for ~9.5 hours.
RELEASE NUMBER: 37
RELEASE DATE: 2019-03-15
DATA COVERAGE: 2018-10-01 to 2018-12-31 for EDR and RDR Products (THIRD EXTENDED
SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
Notes: No known errors or variances.
RELEASE NUMBER: 36
RELEASE DATE: 2018-12-15
DATA COVERAGE: 2018-07-01 to 2018-09-30 for EDR and RDR Products (THIRD EXTENDED
SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
The processed data for the period 2018-07-01 to 2018-09-30 contains one
period of missing CRaTER EDR/RDR data. On 2018-07-27 and 2018-07-28
(DOY 208-209) instruments on LRO were turned off in order to conserve power
during a total lunar eclipse. No CRaTER data was collected for ~12.6 hours.
RELEASE NUMBER: 35
RELEASE DATE: 2018-09-15
DATA COVERAGE: 2018-04-01 to 2018-06-30 for EDR and RDR Products (THIRD EXTENDED
SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
Notes: No known errors or variances.
RELEASE NUMBER: 34
RELEASE DATE: 2018-06-15
DATA COVERAGE: 2018-01-01 to 2018-03-31 for EDR and RDR Products (THIRD EXTENDED
SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
The processed data for the period 2018-01-01 to 2018-03-31 contains one
period of missing CRaTER EDR/RDR data. On 2018-01-31 and 2018-02-01
(DOY 031-032) instruments on LRO were turned off in order to conserve power
during a total lunar eclipse. No CRaTER data was collected for ~16.2 hours.
RELEASE NUMBER: 33
RELEASE DATE: 2018-03-15
DATA COVERAGE: 2017-10-01 to 2017-12-31 for EDR and RDR Products (THIRD EXTENDED
SCIENCE MISSION Phase); and an update to the GAPS_PRI.TAB file reflecting a
data gap in EDR and RDR products that was recovered (2017-07-14).
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
Notes: No known errors or variances.
RELEASE NUMBER: 32
RELEASE DATE: 2017-12-15
DATA COVERAGE: 2017-07-01 to 2017-09-30 for EDR and RDR Products (THIRD EXTENDED
SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
The processed data for the period 2017-07-01 to 2017-09-30 contains one
period of missing CRaTER EDR/RDR data. On 2017-08-07 and 2017-08-08
(DOY 219-220) instruments on LRO were turned off in order to conserve power
during a total lunar eclipse. No CRaTER data was collected for ~13.6 hours.
The CRaTER instrument transitioned into elevated rate mode during two periods,
due to a pair of strong solar particle events which occurred on 2017-09-07
through 2017-09-08, and 2017-09-10 through 2017-09-13. The CRaTER instrument
also transitioned into extreme rate mode during the most intense phase of the
second solar particle event on 2017-09-11, and made frequent transitions
between elevated and extreme rate modes. In the MODE_CHANGES.TAB file,
only the first transition into extreme mode, and the last transition out of
extreme rate mode, are listed for each solar particle event.
RELEASE NUMBER: 31
RELEASE DATE: 2017-09-15
DATA COVERAGE: 2017-04-01 to 2017-06-30 for EDR and RDR Products (THIRD EXTENDED
SCIENCE MISSION Phase); and the following reprocessed days for which data gaps
in EDR and RDR products have been recovered: 2009-12-31, 2010-09-22, 2010-11-17,
2011-02-09, 2011-07-26, 2011-12-02, 2011-12-21, 2012-11-10, 2013-07-23,
2015-03-06, 2015-09-30
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
Notes: No known errors or variances.
RELEASE NUMBER: 30
RELEASE DATE: 2017-06-15
DATA COVERAGE: 2017-01-01 to 2017-03-31 for EDR and RDR Products (THIRD EXTENDED
SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
Notes: No known errors or variances.
RELEASE NUMBER: 29
RELEASE DATE: 2017-03-15
DATA COVERAGE: 2016-10-01 to 2016-12-31 for EDR and RDR Products (THIRD EXTENDED
SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
The processed data for the period 2016-10-01 to 2016-12-31 contains one
period of missing CRaTER EDR/RDR data. Because of events on 2016-12-06
(DOY 341), data recording stopped at 2016-342-10:36. Recording resumed
at 2016-342-23:26. The missing housekeeping data leaves a ~13 hour data
gap in the CRaTER pipeline output. Additionally, the CRaTER pipeline
software did not generate label files (.LBL) for DOY 342.
Because of these problems, users should be aware of the possibility
that the data around this time may be corrupted.
RELEASE NUMBER: 28
RELEASE DATE: 2016-12-15
DATA COVERAGE: 2016-07-01 to 2016-09-30 for EDR and RDR Products (SECOND AND
THIRD EXTENDED SCIENCE MISSION Phases)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
Notes: No known errors or variances.
RELEASE NUMBER: 27
RELEASE DATE: 2016-09-15
DATA COVERAGE: 2016-04-01 to 2016-06-30 for EDR and RDR Products (SECOND
EXTENDED SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
Notes: No known errors or variances.
RELEASE NUMBER: 26
RELEASE DATE: 2016-06-15
DATA COVERAGE: 2016-01-01 to 2016-03-31 for EDR and RDR Products (SECOND
EXTENDED SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
Notes: No known errors or variances.
RELEASE NUMBER: 25
RELEASE DATE: 2016-03-15
DATA COVERAGE: 2015-10-01 to 2015-12-31 for EDR and RDR Products (SECOND
EXTENDED SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
Notes: No known errors or variances.
RELEASE NUMBER: 24
RELEASE DATE: 2015-12-15
DATA COVERAGE: 2015-07-01 to 2015-09-30 for EDR and RDR Products (SECOND
EXTENDED SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
The processed data for the period 2015-07-01 to 2015-09-30 contains one
period of missing CRaTER EDR/RDR data. On 2015-09-28 (DOY 271) instruments
on LRO were turned off in order to conserve power during a total lunar
eclipse. No CRaTER data was collected for ~9.5 hours.
RELEASE NUMBER: 23
RELEASE DATE: 2015-09-15
DATA COVERAGE: 2015-04-01 to 2015-06-30 for EDR and RDR Products (SECOND
EXTENDED SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
The processed data for the period 2015-04-01 to 2015-06-30 contains one
period of missing CRaTER EDR/RDR data. There is one period of data which
was recorded in elevated rate mode.
On 2015-04-04 (DOY 094) instruments on LRO were turned off in order to
conserve power during a total lunar eclipse. No CRaTER data was collected for
~11.6 hours.
At 2015-06-22 18:48 UTC (DOY 173) CRaTER transitioned into elevated rate mode
for ~0.2 hours due to a solar particle event. In elevated rate mode,
CRaTER only records events with two or more detector coincidences.
RELEASE NUMBER: 22
RELEASE DATE: 2015-06-15
DATA COVERAGE: 2015-01-01 to 2015-03-31 (SECOND EXTENDED SCIENCE MISSION
Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
Notes: No known errors or variances.
RELEASE NUMBER: 21
RELEASE DATE: 2015-03-15
DATA COVERAGE: 2014-10-01 to 2014-12-31 (SECOND EXTENDED SCIENCE MISSION
Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
The processed data for the period 2014-10-01 to 2014-12-31 contains one
period of missing CRaTER EDR/RDR data.
On 2014-10-08 (DOY 281) no CRaTER data was collected for ~10.6 hours.
RELEASE NUMBER: 20
RELEASE DATE: 2014-12-15
DATA COVERAGE: 2014-07-01 to 2014-09-30 (EXTENDED SCIENCE MISSION and
SECOND EXTENDED SCIENCE MISSION Phases)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
Notes: No known errors or variances.
RELEASE NUMBER: 19
RELEASE DATE: 2014-09-15
DATA COVERAGE: 2014-04-01 to 2014-06-30 (EXTENDED SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
The processed data for the period 2014-04-01 to 2014-06-30 contains two
periods of missing CRaTER EDR/RDR data.
On 2014-04-03 (DOY 093), no CRaTER data was collected for ~6.7 hours.
On 2014-04-15 (DOY 105), no CRaTER data was collected for ~14.7 hours.
RELEASE NUMBER: 18
RELEASE DATE: 2014-06-13
DATA COVERAGE: 2014-01-01 to 2014-03-31 (EXTENDED SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
The processed data for the period 2014-01-01 to 2014-03-31 contains two
periods of missing CRaTER EDR/RDR data. There is one period of data which
was recorded in elevated rate mode.
At 2014-01-07 21:33 UTC (DOY 007) CRaTER transitioned into elevated rate mode
due to a large solar particle event. In elevated rate mode, CRaTER only records
events with two or more detector coincidences. Due to variations in particle
fluxes during such events, CRaTER made multiple transitions into and out of
elevated rate mode. The last transition out of elevated rate mode occurred at
2014-01-09 11:00 UTC (DOY 009). In the MODE_CHANGES.TAB file, only the first
transition in to elevated rate mode and the last transition out of elevated rate
mode are listed for this particle event.
The CRaTER data processing pipeline is unable to generate complete EDR or RDR
data products for day 2014-01-27 (DOY 027) due to an unrecoverable data gap.
On 2014-02-26 (DOY 057) LRO transitioned into SunSafe mode. No CRaTER data
was collected for ~10.6 hours.
RELEASE NUMBER: 17
RELEASE DATE: 2014-03-14
DATA COVERAGE: 2013-10-01 to 2013-12-31 (EXTENDED SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
The processed data for the period 2013-10-01 to 2013-12-31 contains one
period of missing CRaTER EDR/RDR data.
The CRaTER data processing pipeline is unable to generate EDR or RDR data
products for days 2013-11-26 through 2013-12-02 inclusive (DOYs 330 through
336 inclusive) due to missing and incomplete data files that resulted from LRO
entering SunSafe mode on 2013-11-27 (DOY 331).
RELEASE NUMBER: 16
RELEASE DATE: 2013-12-13
DATA COVERAGE: 2013-07-01 to 2013-09-30 (EXTENDED SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
Notes: No known errors or variances.
RELEASE NUMBER: 15
RELEASE DATE: 2013-09-15
DATA COVERAGE: 2013-04-01 to 2013-06-30 (EXTENDED SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
The processed data for the period 2013-04-01 to 2013-06-30 contains one
period of missing CRaTER EDR/RDR data. There is one period of data which
was recorded in elevated rate mode.
The CRaTER data processing pipeline is unable to generate EDR or RDR data
products for day 2013-05-28 (DOY 148) due to a problem in the data.
At 2013-05-22 18:41 UTC (DOY 142) CRaTER transitioned into elevated rate mode
due to a large solar particle event. In elevated rate mode, CRaTER only records
events with two or more detector coincidences. Due to variations in particle
fluxes during such events, CRaTER made multiple transitions into and out of
elevated rate mode. The last transition out of elevated rate mode occurred at
2012-05-23 21:27 UTC (DOY 143). In the MODE_CHANGES.TAB file, only the first
transition in to elevated rate mode and the last transition out of elevated rate
mode are listed for this particle event.
RELEASE NUMBER: 14
RELEASE DATE: 2013-06-15
DATA COVERAGE: 2013-01-01 to 2013-03-31 (EXTENDED SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
Notes: No known errors or variances in the data files.
RELEASE NUMBER: 13
RELEASE DATE: 2013-03-15
DATA COVERAGE: 2012-10-01 to 2012-12-31 (EXTENDED SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
Notes: No known errors or variances in the data files.
RELEASE NUMBER: 12
RELEASE DATE: 2012-12-15
DATA COVERAGE: 2012-07-01 to 2012-09-30 (SCIENCE and EXTENDED SCIENCE MISSION
Phases)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
Notes: The processed data for the period 2012-07-01 to 2012-09-30 contains
three periods of missing data.
At 2012-08-04 2:15 UTC (DOY 217) CRaTER was powered down, resulting in a data
gap of 14.15 hours. CRaTER was re-started and resumed normal operation at
2012-08-04 16:24 UTC.
At 2012-09-04 7:51 UTC (DOY 248) CRaTER data gathering was interrupted,
resulting in a total data gap of 18.53 hours. CRaTER was
re-started and resumed normal operation at 2012-09-04 22:30 UTC.
At 2012-09-08 1:14 UTC (DOY 252) CRaTER data gathering was interrupted,
resulting in a data gap of 14.45 hours. CRaTER was re-started
and resumed normal operation at 2012-09-08 15:42 UTC.
RELEASE NUMBER: 11
RELEASE DATE: 2012-09-15
DATA COVERAGE: 2012-04-01 to 2012-06-30 (SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
Notes: The processed data for the period 2012-04-01 to 2012-06-30 contains one
period of data which was recorded in elevated rate mode.
At 2012-05-17 02:17 UTC (DOY 138) CRaTER transitioned into elevated rate mode
due to a large solar particle event. In elevated rate mode, CRaTER only records
events with two or more detector coincidences. Due to variations in particle
fluxes during such events, CRaTER made several transitions into and out of
elevated rate mode. The last transition out of elevated rate mode occurred at
2012-05-17 06:37 UTC. In the MODE_CHANGES.TAB file, only the first transition
in to elevated rate mode and the last transition out of elevated rate mode are
listed for this particle event.
RELEASE NUMBER: 10
RELEASE DATE: 2012-06-15
DATA COVERAGE: 2012-01-01 to 2012-03-31 (SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
Notes: The processed data for the period 2012-01-01 to 2012-03-31 contains one
period of missing data due to LRO entering SunSafe Mode. There are four periods
of data which were recorded in elevated and/or extreme rate modes. There are
also two periods of data for which the LLD baseline settings were changed to 72
instead of the nominal value of 71.
Before LRO's entry into SunSafe mode, the last CRaTER science data was recorded
at 2012-03-22T1:52:53 UTC. The CRaTER instrument was restored to full science
operations and resumed recording at 2012-03-23T18:36:38 UTC (DOY 83), resulting
in a data gap of 40.73 hours.
The CRaTER instrument transitioned into elevated and extreme rate modes during
four periods, due to two pairs of strong solar particle events which occurred on
2012-01-23 through 2012-01-25, 2012-01-27 through 2012-01-28, 2012-03-07 through
2012-03-10, and 2012-03-13 through 2012-03-14. In elevated rate mode, CRaTER
only records events with two or more detector coincidences. In extreme rate
mode, coincident detections are also required and the LLD settings of the thin
detectors are raised to 80. Due to large variations in particle fluxes during
large solar particle events, CRaTER made frequent transitions between elevated
and extreme rate modes. In the MODE_CHANGES.TAB file, only the first transition
in to extreme mode, and the last transition out of extreme rate mode, are listed
for each solar particle event.
Due to a software error, the LLD settings were restored to 72 (rather than the
nominal 71) at the conclusion of the elevated and extreme rate modes. This
resulted in two periods with off-nominal baseline LLD settings: 2012-01-23
to 2012-02-05, inclusive, and 2012-03-07 to 2012-03-22, inclusive.
RELEASE NUMBER: 9
RELEASE DATE: 2012-03-15
DATA COVERAGE: 2011-10-01 to 2011-12-31 (SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
Notes: The processed data for the period 2011-10-01 to 2011-12-31 contains
one period of missing data due to communication problems which required
files to be deleted on LRO. The problem occurred on 2011-12-01 and
2011-12-02 (DOY 335 and 336). One CRaTER data science file for DOY 336
was lost.
RELEASE NUMBER: 8
RELEASE DATE: 2011-12-15
DATA COVERAGE: 2011-07-01 to 2011-09-30 (SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
Notes: No known errors or variances.
RELEASE NUMBER: 7
RELEASE DATE: 2011-09-15
DATA COVERAGE: 2011-04-01 to 2011-06-30 (SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
Notes: The processed data for the period 2011-04-01 to 2011-06-30 contains two
periods of missing data. The first period resulted from an unplanned
extended instrument power-down, the second from a communication downlink anomaly
followed by a planned spacecraft-wide power-down.
On 2011-04-03 at 17:32 UTC (DOY 093) the orbiter entered into sun-safe mode while
executing off-nadir slews in support of lunar science observations and instrument
calibrations. The immediate cause was the detection of a large slew by the
orbiter's safing system, automatically activating a sun-safing command sequence.
The root cause was a scheduling error which led to two overlapping large-angle
off-nadir observation command sequences. The initiation of the second large
off-nadir slew prior to full completion of the preceding slew maneuver left the
safing system in the wrong configuration for the second slew, leading to the
sun-safing command. On entry into sun-safe mode, all instruments and a subset of
operational heaters were powered-down to conserve power in sunsafe mode. Full
recovery to nominal spacecraft and instrument operations did not occur until
2011-04-04 16:48 UTC (DOY = 094). This anomaly is described in Anomaly
Notification Report AR2011093 and the LRO Operations Weekly Report for 2011-03-29
through 2011-04-04. The sun-safing maneuver instrument power-downs and subsequent
spacecraft and science instrument recovery operations resulted in a gap in CRaTER
EDR/RDR data from 2011-04-03T17:28:06 (DOY 093) to 2011-04-04T14:19:43 (DOY 094),
inclusive.
The second missing data period spans 2011-06-14T07:51:15 (DOY 165) to
2011-06-17T12:11:53 (DOY 168), inclusive. This 76.34 hour data gap resulted from a
confluence of ground communication station operational errors, the need to conserve
orbiter battery power during a lunar eclipse, and an anomaly recovery period
greatly extended by the need to perform an orbiter momentum dump maneuver. The
immediate cause was a Ka-band downlink anomaly at 2011-06-14 09:40 UTC (DOY 165)
due to an onboard initiated Ka-system shutdown while transactions were still in
progress on the SpaceWire link, leading to SpaceWire link "back pressure" and
blockage of further Ka-band downlink. The anomaly prevented the complete download
of data from the orbiter's solid state recorders. Restoration of Ka-band downlink
capability was delayed until 2011-06-16 ~21:00 UTC (DOY 167) due to special
operations for the deep lunar eclipse on 2011-06-15 (DOY 166). All science
instruments were powered down at 2011-06-15 ~18:30 UTC (DOY 166) to conserve
battery power and ensure orbiter survival through the eclipse. Post-eclipse
instrument power-on and return to nominal science observations were delayed by the
need to complete the recovery of Ka-band downlink and perform a scheduled momentum
dump maneuver. In addition to a loss of observations during the extended power-
down, all CRaTER data files stored in the orbiter's solid state recorders at the
time of the downlink anomaly were subsequently deleted due to recorder space
requirements. This anomaly and subsequent activities are described in Anomaly
Notification Report AR2011165 and the LRO Operations Weekly Report for 2011-06-14
through 2011-06-20. The cumulative result of these events is the 84.19 hour data
gap as previously described.
RELEASE NUMBER: 6
RELEASE DATE: 2011-06-15
DATA COVERAGE: 2011-01-01 to 2011-03-31 (SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
Notes: The processed data for the period 2011-01-01 to 2011-03-31 contains
one period of missing data resulting from an extended instrument power-down.
At 2011-02-23 15:27:58 UTC (DOY = 054) the orbiter experienced a low battery
voltage anomaly during the termination of an extended solar array power output
test, causing the orbiter to enter sun-safing mode. On entry into sun-safe
mode, all instruments, star trackers, and three of four data storage boards
were shut down. All data stored on the three affected data storage boards were
erased; files not previously downloaded were permanently lost. Full recovery
to nominal spacecraft and instrument operations did not occur until
2011-02-25 16:47 UTC (DOY = 056). This anomaly is described in Anomaly
Notification Report AR2011054 and LRO Operations Weekly Report for the week of
2011-02-22 through 2011-02-28. The sun-safing maneuver instrument and data
storage board power-downs and subsequent spacecraft and science instrument
recovery operations resulted in a gap in CRaTER EDR/RDR data from
2011-02-23T14:12:18 (054) to 2011-02-25T14:54:42 (056), inclusive.
RELEASE NUMBER: 5
RELEASE DATE: 2011-03-15
DATA COVERAGE: 2010-10-01 to 2010-12-31 (SCIENCE MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
Notes: The processed data for the period 2010-10-01 to 2010-12-31 contains
one period of missing data resulting from an extended instrument power-down.
The orbiter experienced an extended solar eclipse on 2010-12-21. The eclipse
duration was a total of 306 minutes, including a 104 minute transition through
the eclipse umbra. Pre-eclipse power analysis indicated that due to the
eclipse duration, in particular the extended duration in the eclipse umbra,
spacecraft battery power would drain to critically low levels. To ensure
adequate battery power for spacecraft survival, non-critical systems were
powered-down prior to entry into eclipse, including all science instruments.
The power-down resulted in a gap in CRaTER EDR/RDR data from 2010-12-21T05:07:05
(355) to 2010-12-21T15:27:27 (355), inclusive.
RELEASE NUMBER: 4
RELEASE DATE: 2010-12-15
DATA COVERAGE: 2010-07-01 to 2010-09-30 (NOMINAL and SCIENCE MISSION Phases)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
Notes: The processed data for the period 2010-07-01 to 2010-09-30 contains
one period of missing data resulting from an extended instrument power-down.
The station keeping #12 (SK12) maneuvers were performed during the period
2010-07-24 (DOY = 205) 14:30 - 19:15 UTC. Pre-maneuver analyses indicated
that due to expected extended eclipse periods during the maneuver period,
available spacecraft battery power levels could potentially reach critically
low levels, causing the spacecraft to enter into sun-safe mode. To ensure
adequate battery power availability, all LRO science instruments were powered-
down during the maneuver period. This power-down resulted in a gap in CRaTER
EDR/RDR data from 2010-07-24T14:33:06 (205) to 2010-07-25T00:52:51 (206),
inclusive.
RELEASE NUMBER: 3
RELEASE DATE: 2010-09-15
DATA COVERAGE: 2010-04-01 to 2010-06-30 (NOMINAL MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
Notes: No known errors or variances.
RELEASE NUMBER: 2
RELEASE DATE: 2010-06-15
DATA COVERAGE: 2010-01-01 to 2010-03-31 (NOMINAL MISSION Phase)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
Notes: The processed data for the period 2010-01-01 to 2010-03-31 contains
several periods of missing or partial data resulting from spacecraft
and instrument operating anomalies. Data users are cautioned to note these
anomalous periods and the associated data use limitations.
On 2010-02-09 (DOY = 040) the LRO spacecraft experienced a Ka-band playback
anomaly following the Station Keeping #6 manuevers. This was followed on
2010-02-10 (DOY = 041) by a C&DH power-on reset. The power-on reset anomaly
caused the spacecraft to enter a sun-safe mode, erased all operating
parameters stored in volatile RAM, and erased all data still stored on the
spacecraft's solid state recorders. Full recovery to nominal spacecraft and
instrument operations did not resume until the beginning of 2010-02-16
(DOY = 047). These anomalies are described in spacecraft operations anomaly
report S-LRO-OPS-0265 and LRO Operations Weekly Report for the week of
2010-02-09 through 2010-02-15.
As a result of these anomalies there are large gaps in the CRaTER science and
housekeeping data as well as ancillary spacecraft data required to fully
process the CRaTER data into complete RDR data products. The data gaps
are summarized below.
Data Data Gap
-----------------------------------------------------------------------------
CRaTER EDR/RDR 2010-02-10T15:03:50 (041) to 2010-02-15T20:09:05 (046)
(inclusive)
Spacecraft Pointing 2010-02-09T10:45:36 (040) to 2010-02-12T00:01:05 (043)
(CK Kernel) (inclusive)
Spacecraft Housekeeping 2010-02-09T14:30:48 (040) to 2010-02-11T03:10:05 (042)
Data (inclusive)
The CRaTER EDR/RDR data available during this anomaly period is summarized
below.
Date DOY EDR/RDR Data Available
-----------------------------------------------------------------------------
2010-02-09 040 00:00:00 to 23:59:59 (UTC)
2010-02-10 041 00:00:00 to 15:03:49 (UTC)
2010-02-11 042 None
2010-02-12 043 None
2010-02-13 044 None
2010-02-14 045 None
2010-02-15 046 20:09:06 to 23:59:59 (UTC)
As a result of the partial/total absence of spacecraft pointing and
housekeeping data for 2010-02-09 (040) and 2010-02-10 (041), the L2 secondary
science and housekeeping RDR data are missing parameters derived from the
spacecraft pointing and housekeeping data. The L2 secondary science data
does not contain the Moon-to-spacecraft vector (MOON_ME) (columns 30-32).
Instead, the missing values are replaced with "-1.0000e+00". The L2
housekeeping data does not contain the spacecraft 28VDC power bus voltage
(column 4), CRaTER current draw from spacecraft 28VDC power bus (column 9),
CRaTER power draw from spacecraft 28VDC power bus (V28bus*I28bus)
(column 10), or instrument-boresite-points-off-lunar-surface and
LRO-in-eclipse flags. The missing 28VDC power bus voltage, current draw, and
power draw values are replaced with "-42.130," "-10.231," and "431.046",
respectively. The missing data applies to ***ALL*** L2 secondary science and
housekeeping RDR data records for 2010-02-09 (040) and 2010-02-10 (041). In
particular, the Moon-to-spacecraft vectors and boresite point flags CANNOT
be used to determine either spacecraft location or relative instrument
pointing for 2010-02-09 (040) and 2010-02-10 (041).
As a result of commanding errors during a pulser calibration procedure, the
detector HV bias was erroneously left off during the period
2010-03-07T16:00:25 (066) and 2010-03-08T16:40:55 (067) (inclusive). The
primary science data during this period are UNUSABLE and should be EXCLUDED
from any data analyses. Similarly, the "Good," "Reject," and "Total" fields
(columns 27-29) in the corresponding secondary science data records are
INVALID and should also be EXCLUDED from any data analyses.
RELEASE NUMBER: 1
RELEASE DATE: 2010-03-15
DATA COVERAGE: 2009-06-29 to 2009-12-31 (COMMISSIONING and NOMINAL MISSION Phases)
PRODUCT TYPES RELEASED FOR THIS ARCHIVE: EDR, RDR
PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None.
Notes: Initial delivery. No known errors or variances.
******** SECTION B ********
This section is provided for general notes concerning the archive as a whole.
2010-05-28: All spacecraft pointing-derived values contained in CRaTER RDR
data (i.e., Moon-to-spacecraft vector, instrument-boresite-points-off-lunar-
surface and LRO-in-eclipse flags) are based on the ORIGINAL CK kernels
(MOC-42) provided by the MOC. Based on analyses performed and reported by
the NAIF, the CRaTER instrument team determined that the error magnitude for
pointing vectors computed with the original CK kernels is negligible
in comparison to angular width of the instrument's particle acceptance cones.
CRaTER RDR data will be reprocessed with updated CK kernels produced by the
MOC if subsequent analyses determines the error in the pointing-derived
values adversely impacts the dataset's scientific usefulness.
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