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Product_Observational

Identification_Area
logical_identifier
urn:nasa:pds:mess-mag-raw:data-shd:magshd121000000
version_id
1.0
title
MESSENGER MAG Raw Science Header Data 2012-04-09 00:00:06 - 2012-04-09 23:59:53
information_model_version
1.15.0.0
product_class
Product_Observational
Citation_Information
author_list
Korth, H.
publication_year
2021
description
The table contains information reflecting the instrument state (health and mode) as reported by the MAG science packet. Each record in the table corresponds to the instrument state for a given science packet as these parameters are only updated once per packet. The table contains data from Science packets generated on a given day; data from each packet will be stored as one row in the ASCII table. START_TIME and STOP_TIME correspond to the MET values of the first row and last row (respectively) in the table.
Modification_History
Modification_Detail
modification_date
2021-03-24
version_id
1.0
description
This product, MAGSHD121000000_V2.TAB, was originally released in 2015 as part of the PDS3 MESS-E/V/H/SW-MAG-2-EDR-RAWDATA-V1.0 dataset. The metadata have been migrated to PDS4. The data themselves are unchanged.
Observation_Area
Time_Coordinates
start_date_time
2012-04-09T00:00:06.000Z
stop_date_time
2012-04-09T23:59:53.000Z
Primary_Result_Summary
purpose
Engineering
processing_level
Raw
Investigation_Area
name
MESSENGER
type
Mission
Internal_Reference
lid_reference
urn:nasa:pds:context:investigation:mission.messenger
reference_type
data_to_investigation
Observing_System
Observing_System_Component
name
MAGNETOMETER
type
Instrument
Internal_Reference
lid_reference
urn:nasa:pds:context:instrument:mag.mess
reference_type
is_instrument
Observing_System_Component
name
MESSENGER
type
Host
Internal_Reference
lid_reference
urn:nasa:pds:context:instrument_host:spacecraft.mess
reference_type
is_instrument_host
Target_Identification
name
Mercury
type
Planet
Internal_Reference
lid_reference
urn:nasa:pds:context:target:planet.mercury
reference_type
data_to_target
Mission_Area
MESSENGER
mission_phase_name
Mercury Orbit Year 2
spacecraft_clock_start_count
1/242417072
spacecraft_clock_stop_count
1/242503459
Reference_List
Source_Product_External
external_source_product_identifier
MESS-E/V/H/SW-MAG-2-EDR-RAWDATA-V1.0:magshd121000000
reference_type
data_to_raw_source_product
doi
10.17189/1519744
curating_facility
NASA Planetary Data System
description
This is the first version of this product converted to PDS4. The DOI provided references the PDS3 source data set.
File_Area_Observational
File
file_name
MAGSHD121000000_V2.TAB
creation_date_time
2014-03-21T11:26:13.000Z
file_size
708480
md5_checksum
e33bb274b7bea27fc0355217465c6b88
comment
This data file is unmodified from the PDS3 version.
Table_Character
offset
0
records
8640
record_delimiter
Carriage-Return Line-Feed
Record_Character
fields
18
groups
0
record_length
82
Field_Character
name
TIME_TAG
field_number
1
field_location
1
data_type
ASCII_Real
field_length
14
description
A derived value for the timetag associated with the x,y,z sample in each record. The derived value is created by the following formula: MET + 0.05 * delta_ts + (dt_sample)*(I-1). MET is the mission elapsed time for the entire science packet. delta_ts is the delta time in seconds between the MET and the first sample in the downloaded science packet. dt_sample is the time between samples in seconds and given by dt_sample = 1/sample_rate where sample_rate is the reported sample rate in samples per second. I is the incremental counter for each data sample in the science packet. I=1 is the first sample in the packet.
Field_Character
name
DELTA_TS
field_number
2
field_location
17
data_type
ASCII_Integer
field_length
2
description
The delta time in 50 millisecond steps between the MET value for the packet and the first sample in the science packet, provides a 50 millisecond resolution to the time tag for the first data value.
Field_Character
name
NUM_SAMPLES
field_number
3
field_location
21
data_type
ASCII_Integer
field_length
3
description
The number of MAG samples (0-200) in the science packet.
Field_Character
name
NUM_LOGAC
field_number
4
field_location
26
data_type
ASCII_Integer
field_length
3
description
The number of logAC samples (0-200) in the science packet.
Field_Character
name
ANALOG_CAL
field_number
5
field_location
31
data_type
ASCII_Integer
field_length
1
description
Analog calibration flag. =0 off, =1 on.
Field_Character
name
A_D_CAL
field_number
6
field_location
34
data_type
ASCII_Integer
field_length
1
description
A/D calibration flag. =0 off, =1 on.
Field_Character
name
COMPRESS_ON
field_number
7
field_location
37
data_type
ASCII_Integer
field_length
1
description
Indicates whether science packet was compressed or uncompressed. =0 uncompressed, =1 compressed.
Field_Character
name
RANGE_MODE
field_number
8
field_location
40
data_type
ASCII_Integer
field_length
1
description
Range control mode used. =0 manual, =1 automatic
Field_Character
name
FILTERS_ON
field_number
9
field_location
43
data_type
ASCII_Integer
field_length
1
description
Indicates whether filters were on or off. =0 off, =1 on
Field_Character
name
MANUAL_RANGE_CMD
field_number
10
field_location
46
data_type
ASCII_Integer
field_length
1
description
Commanded manual range setting. =0 1530 nT, =1 51300 nT
Field_Character
name
ACTUAL_RANGE
field_number
11
field_location
49
data_type
ASCII_Integer
field_length
1
description
Actual range used by MAG. =0 1530 nT, =1 51300 nT.
Field_Character
name
AC_AXIS
field_number
12
field_location
52
data_type
ASCII_Integer
field_length
1
description
AC axis selected. =0 X, =1 Y, =2 Z
Field_Character
name
SAMPLE_RATE
field_number
13
field_location
55
data_type
ASCII_Integer
field_length
2
description
MAG sample rate. =0 0.01/s, =1 0.02/s, =2 0.05/s, =3 0.1/s, =4 0.2/s, =5 0.5/s, =6 1/s, =7 2/s, =8 5/s, =9 10/s, =10 20/s
Field_Character
name
APP_ID
field_number
14
field_location
59
data_type
ASCII_Integer
field_length
3
description
The Application Process ID of the science packet from which data was extracted. Values for PROBE_TEMPERATURE are N/A when this value is 721, which is the AppID of the old packet format. An AppID of 725 identifies the new packet format which contains valid values for PROBE_TEMPERATURE.
Field_Character
name
X_SAMPLES_COMPRESSION_BITS
field_number
15
field_location
64
data_type
ASCII_Integer
field_length
2
description
Number of bits needed to store each compressed X axis sample.
Field_Character
name
Y_SAMPLES_COMPRESSION_BITS
field_number
16
field_location
68
data_type
ASCII_Integer
field_length
2
description
Number of bits needed to store each compressed Y axis sample.
Field_Character
name
Z_SAMPLES_COMPRESSION_BITS
field_number
17
field_location
72
data_type
ASCII_Integer
field_length
2
description
Number of bits needed to store each compressed Z axis sample.
Field_Character
name
PROBE_TEMPERATURE
field_number
18
field_location
76
data_type
ASCII_Integer
field_length
5
description
Raw telemetry counts of the High temperature resolution probe temperature.This is set to an N/A value of 65535 when APP_ID is 721.
Special_Constants
not_applicable_constant
65535