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Product_Observational

Identification_Area
logical_identifier
urn:nasa:pds:cassini-mimi-lemms-raw:data-pha:lpha_2011053
version_id
1.0
title
Cassini MIMI LEMMS Raw Pulse Height Analysis Data for 2011-02-22
information_model_version
1.20.0.0
product_class
Product_Observational
Citation_Information
author_list
Manweiler, Jerry
publication_year
2024
keyword
LEMMS
keyword
MIMI
description
This file contains Cassini Magnetospheric Imaging Instrument (MIMI) Low Energy Magnetospheric Measurement System (LEMMS) raw pulse height analysis data for 2011-02-22T00:00:00.000Z to 2011-02-22T23:59:59.000Z during the Extended-Extended Mission.
Modification_History
Modification_Detail
modification_date
2024-01-17
version_id
1.0
description
This product, LPHA0_2011053_0004.CSV, was originally released as part of the PDS3 CO-E/J/S/SW-MIMI-2-LEMMS-UNCALIB-V1.1 data set. The metadata have been migrated to PDS4. The data themselves are unchanged.
Observation_Area
Time_Coordinates
start_date_time
2011-02-22T00:00:00.000Z
stop_date_time
2011-02-22T23:59:59.000Z
Primary_Result_Summary
purpose
Science
processing_level
Raw
description
Cassini MIMI LEMMS Raw Pulse Height Analysis Extended-Extended Mission Data
Science_Facets
domain
Heliosphere
domain
Magnetosphere
discipline_name
Particles
facet1
Ions
facet2
Energetic
Science_Facets
domain
Heliosphere
domain
Magnetosphere
discipline_name
Particles
facet1
Electrons
facet2
Energetic
Investigation_Area
name
Cassini-Huygens
type
Mission
Internal_Reference
lid_reference
urn:nasa:pds:context:investigation:mission.cassini-huygens
reference_type
data_to_investigation
Observing_System
Observing_System_Component
name
Cassini Orbiter
type
Host
Internal_Reference
lid_reference
urn:nasa:pds:context:instrument_host:spacecraft.co
reference_type
is_instrument_host
Observing_System_Component
name
Magnetospheric Imaging Instrument for Cassini Orbiter
type
Instrument
Internal_Reference
lid_reference
urn:nasa:pds:context:instrument:mimi.co
reference_type
is_instrument
Observing_System_Component
name
MIMI Low Energy Magnetospheric Measurement Sensor for Cassini Orbiter
type
Instrument
Internal_Reference
lid_reference
urn:nasa:pds:context:instrument:mimi-lemms.co
reference_type
is_instrument
Target_Identification
name
Saturn
type
Planet
Internal_Reference
lid_reference
urn:nasa:pds:context:target:planet.saturn
reference_type
data_to_target
Discipline_Area
Mission_Information
mission_phase_name
Extended-Extended Mission
spacecraft_clock_start
1677026873.047
spacecraft_clock_stop
1677113275.128
spacecraft_clock_partition
1
Orbital_Mission
start_orbit_number
145
stop_orbit_number
145
Particle_Observation
energy_range_minimum
30
energy_range_maximum
160
Particle_Parameter
particle_type
Ions
particle_measurement_type
Pulse Height Analysis
Particle_Observation
energy_range_minimum
15
energy_range_maximum
1000
Particle_Parameter
particle_type
Electrons
particle_measurement_type
Pulse Height Analysis
Reference_List
Internal_Reference
lid_reference
urn:nasa:pds:cassini-mimi-lemms-raw:geometry:lemms_geometry
reference_type
data_to_geometry
Internal_Reference
lidvid_reference
urn:nasa:pds:cassini-mimi:calib-raw:mimi_calibration::1.0
reference_type
data_to_calibration_product
Internal_Reference
lidvid_reference
urn:nasa:pds:cassini-mimi:data-ancillary::1.0
reference_type
data_to_ancillary_data
Internal_Reference
lidvid_reference
urn:nasa:pds:cassini-mimi:data-ancillary:mimi_datagaps_2011::1.0
reference_type
data_to_ancillary_data
Internal_Reference
lidvid_reference
urn:nasa:pds:cassini-mimi:data-ancillary:mimi_hskp_datagaps_2011::1.0
reference_type
data_to_ancillary_data
Internal_Reference
lidvid_reference
urn:nasa:pds:cassini-mimi:data-ancillary:mimi_spin_2011::1.0
reference_type
data_to_ancillary_data
Internal_Reference
lid_reference
urn:nasa:pds:cassini-mimi:spice-mk:mimi
reference_type
data_to_spice_kernel
Source_Product_External
external_source_product_identifier
CO-E/J/S/SW-MIMI-2-LEMMS-UNCALIB-V1.1:LPHA0_2011053_0004:LPHA0_2011053_0004.CSV
reference_type
data_to_raw_source_product
doi
10.17189/1519598
curating_facility
PDS Planetary Plasma Interactions Node
description
This is the first version converted to PDS4. The DOI references the source PDS3 data set.
File_Area_Observational
File
file_name
LPHA0_2011053_0004.CSV
creation_date_time
2018-12-01T15:40:49
file_size
3782182
md5_checksum
9a02042c5403fec6c36cefbacda0f6b3
Header
name
Cassini MIMI LEMMS Pulse Height Analysis Header
offset
0
object_length
8023
parsing_standard_id
PDS DSV 1
description
This file contains multiple rows of information: Row 1 - Column headings as comma separated (CS) double quoted strings. Row 2 - Valid minimum values for each of the data columns (CS). Row 3 - Valid maximum values for each of the data columns (CS). Row 4 - Actual minimum values for each of the data columns (CS). Row 5 - Actual maximum values for each of the data columns (CS). Row 6 - Mean value of all data within each column (CS). Row 7 - Standard Deviation of all data within each column (CS).
Table_Delimited
name
Cassini MIMI LEMMS Raw Pulse Height Analysis Data for 2011-02-22
offset
8023
parsing_standard_id
PDS DSV 1
records
6975
record_delimiter
Carriage-Return Line-Feed
field_delimiter
Comma
Record_Delimited
fields
17
groups
3
Field_Delimited
name
Purpose
field_number
1
data_type
ASCII_String
maximum_field_length
32
description
The PURPOSE field identifies the purpose or function of the data contained in current row. Valid entries include: SCI - normal science data values VALID_MIN - the inclusive or exclusive minimum value allowed for this column VALID_MAX - the inclusive or exclusive maximum value allowed for this column MIN - the minimum value for this column present in this product MAX - the maximum value for this column present in this product MEAN - the mean of the values in this column in this product, this value will be rounded for integer columns STDEV - the standard deviation of the values in this column in this product, this value will be rounded for integer columns
Field_Delimited
name
UTC
field_number
2
data_type
ASCII_Date_Time_DOY
maximum_field_length
21
description
The time as YYYY-DOYTHH:MM:SS.HHH calculated using the starting Ephemeris Time for this record
Field_Delimited
name
SCLOCK
field_number
3
data_type
ASCII_String
maximum_field_length
16
description
SCLOCK in ticks calculated using the starting Ephemeris Time for this record. The SCLOCK format is #/NNNNNNNNNN.FFF where # is the partition number NNNNNNNNNN is the number of ticks since the beginning of the mission FFF is the fine number of ticks as 1/256 of a second
Field_Delimited
name
Start_Ephermeris_S
field_number
4
data_type
ASCII_Real
maximum_field_length
20
unit
seconds
description
The J2000 ephemeris time in seconds at the beginning of the time period for this record.
Special_Constants
valid_maximum
757339265
valid_minimum
-71063936
Field_Delimited
name
End_Ephemeris_S
field_number
5
data_type
ASCII_Real
maximum_field_length
20
unit
seconds
description
The J2000 ephemeris time in seconds at the end of the time period for this record.
Special_Constants
valid_maximum
757339265
valid_minimum
-71063936
Field_Delimited
name
Spin_Counter
field_number
6
data_type
ASCII_Integer
maximum_field_length
10
description
MIMI always organizes time by Spins, when Cassini is not in spin mode, MIMI uses a commanded virtual spin period. This column is a counter that increments with each spin or virtual spin. This counter resets when MIMI undergoes certain operations like shutdown, and is not sufficiently large that it will not roll over.
Special_Constants
valid_maximum
16383
valid_minimum
0
Field_Delimited
name
Sector
field_number
7
data_type
ASCII_Integer
maximum_field_length
10
description
Each spin is divided into 16 sectors. Sectors have no meaning with regard to pointing. They are nothing more or less than segments of time. This column contains the zero based index of the sector. Sectors have special significance in that the beginning of a sector is the only time that MIMI records the SCLOCK. All other times must be calculated based on the subsector, and, where appropriate, microsector values provided below. Times in this product were calculated in this manner.
Special_Constants
valid_maximum
15
valid_minimum
0
Field_Delimited
name
Start_Sector_Sclock_Major
field_number
8
data_type
ASCII_Integer
maximum_field_length
10
description
The value of the Spacecraft clock at the beginning of Sector during which this record occurred. This, combined with subsector, and microsector where appropriate, is the monotonic timestamp for the each record. All other times are calculated from this time representation.
Special_Constants
valid_maximum
4000000000
valid_minimum
0
Field_Delimited
name
Subsector
field_number
9
data_type
ASCII_Integer
maximum_field_length
10
description
Each sector is divided into 16 subsectors. Subsectors have no meaning as far as pointing. They are nothing more or less than segments of time.
Special_Constants
valid_maximum
15
valid_minimum
0
Field_Delimited
name
Microsectors_Covered
field_number
10
data_type
ASCII_Integer
maximum_field_length
10
description
Each subsector is divided into 16 microsectors. Microsectors have no meaning as far as pointing. They are nothing more or less than segments of time. This column is the number of microsectors over which this record was recorded, i.e. 16 for one subsector, 32 for two subsectors, 256 for one sector, etc.
Special_Constants
valid_maximum
1024
valid_minimum
2
Field_Delimited
name
Spin_Period_S
field_number
11
data_type
ASCII_Real
maximum_field_length
20
unit
seconds
description
The spacecraft spin period in seconds. If the spacecraft is not in spin mode, this is the virtual spin period used by the MIMI sensor to determine the timing of data collection. This value is not very reliable. It represents the 'nominal' spin period. When the spin period is changing, it will not be very accurate.
Special_Constants
valid_maximum
3072
valid_minimum
680
Field_Delimited
name
Staring
field_number
12
data_type
ASCII_Integer
maximum_field_length
10
description
0 if the spacecraft is in spin mode, 1 if the not in spin mode.
Special_Constants
valid_maximum
1
valid_minimum
0
Field_Delimited
name
Sensor_Bitrate
field_number
13
data_type
ASCII_Integer
maximum_field_length
1
description
Describes the bit rate of each of the sensors (CHEMS, INCA, LEMMS). 1 = very low, 2 = low, 3 = medium, 4 = high, 5 = very high.
Special_Constants
valid_maximum
5
valid_minimum
1
Group_Field_Delimited
repetitions
64
fields
1
groups
0
Field_Delimited
name
Detector_A_Bin_0_63
field_number
14
data_type
ASCII_Integer
maximum_field_length
10
description
This field contains an array of counts observed within each of the 64 energy bins for detector A, accumulated over the time interval derived from either the END_EPHEMERIS_S - START_EPHEMERIS_S or else START_EPHEMERIS_S (of the next contiguous record) - START_EPHEMERIS_S (of this record). Detector A energy bins are logarithmically spaced. See the MIMI_CALIBRATION calibration file for spacing deltas and min and max energies
Special_Constants
valid_maximum
65534
valid_minimum
0
Group_Field_Delimited
repetitions
64
fields
1
groups
0
Field_Delimited
name
Detector_E_Bin_0_63
field_number
1
data_type
ASCII_Integer
maximum_field_length
10
description
This field contains an array of counts observed within each of the 64 energy bins for detector E, accumulated over the time interval derived from either the END_EPHEMERIS_S - START_EPHEMERIS_S or else START_EPHEMERIS_S (of the next contiguous record) - START_EPHEMERIS_S (of this record). Detector E energy bins are logarithmically spaced. See the MIMI_CALIBRATION calibration file for spacing deltas and min and max energies
Special_Constants
valid_maximum
65534
valid_minimum
0
Group_Field_Delimited
repetitions
64
fields
1
groups
0
Field_Delimited
name
Detector_F1_Bin_0_63
field_number
1
data_type
ASCII_Integer
maximum_field_length
10
description
This field contains an array of counts observed within each of the 64 energy bins for detector F, accumulated over the time interval derived from either the END_EPHEMERIS_S - START_EPHEMERIS_S or else START_EPHEMERIS_S (of the next contiguous record) - START_EPHEMERIS_S (of this record). Detector F energy bins are logarithmically spaced. See the MIMI_CALIBRATION calibration file for spacing deltas and min and max energies
Special_Constants
valid_maximum
65534
valid_minimum
0
Field_Delimited
name
Center_Look_Angle_Degrees
field_number
14
data_type
ASCII_Real
maximum_field_length
20
unit
degrees
description
The angle in degrees of the LEMMS Low Energy Telescope (LET) boresight relative to the spacecraft -Z axis. NOTE: This angle gives the LET position not at the start of the measurement, but at the middle of the measurement so as to facilitate pitch angle calculations. This angle is zero when the LEMMS Low Energy Telescope (LET) is aligned with the spacecraft -Z axis and the angle increases as the platform rotates towards the spacecraft -X axis.
Special_Constants
valid_maximum
360
valid_minimum
0
Field_Delimited
name
LEMMS_Sun_Angle
field_number
15
data_type
ASCII_Real
maximum_field_length
20
unit
degrees
description
The angle between the LEMMS Low Energy Telescope (LET) boresight and the spacecraft-to-Sun vector. This angle is calculated at the midpoint in time of the measurement and is useful in understanding when data corruption occurs due to light contamination from Solar UV radiation, which can cause spurious increases in the counting rates of the LET and High Energy Telescope (HET) of LEMMS.
Special_Constants
valid_maximum
180
valid_minimum
-179.999
Field_Delimited
name
LEMMS_Sun_Angle_Phi
field_number
16
data_type
ASCII_Real
maximum_field_length
20
unit
degrees
description
This field represents the angle between the spacecraft-to-Sun vector projected into the spacecraft X-Z plane and the boresight of the LEMMS Low Energy Telescope (LET). Let the X-Z projection of the spacecraft-to-Sun vector be Vproj, and then compute for Vproj a rotation angle away from the spacecraft -Z axis (in the same way the field 77, the CENTER_LOOK_ANGLE_DEGREES, is computed), and then LEMMS_SUN_ANGLE_PHI is Q minus CENTER_LOOK_ANGLE_DEGREES. This angle is calculated at the midpoint in time of the measurement and is useful in understanding when data corruption occurs due to light contamination from Solar UV radiation, which can cause spurious increases in the counting rates of the LET and High Energy Telescope (HET) of LEMMS.
Special_Constants
valid_maximum
180
valid_minimum
-179.999
Field_Delimited
name
LEMMS_Sun_Angle_Theta
field_number
17
data_type
ASCII_Real
maximum_field_length
20
unit
degrees
description
This field represents the angle between the spacecraft-to-Sun vector and the spacecraft X-Z plane. This angle is calculated at the midpoint in time of the measurement and is useful in understanding when data corruption occurs due to light contamination from Solar UV radiation, which can cause spurious increases in the counting rates of the LET and High Energy Telescope (HET) of LEMMS.
Special_Constants
valid_maximum
180
valid_minimum
-179.999