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Product_Observational
- Identification_Area
-
- logical_identifier
- urn:nasa:pds:mess-mag-raw:data-lhd:maglhd123620003
- version_id
- 1.0
- title
- MESSENGER MAG Raw Housekeeping Header Data 2012-12-27 00:03:14 - 2012-12-27 23:56:34
- information_model_version
- 1.15.0.0
- product_class
- Product_Observational
- Citation_Information
-
- author_list
- Korth, H.
- publication_year
- 2021
- description
-
The table contains the instrument state (mode and health) as reported by the
MAG Low-Rate Housekeeping (LRHK) packet. Each record in the table corresponds
to the instrument state for a given LRHK packet. The table contains data from
LRHK packets generated on a given day; data from each packet is 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, MAGLHD123620003_V1.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
- 2012-12-27T00:03:14.000Z
- stop_date_time
- 2012-12-27T23:56:34.000Z
- 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
- 1/265054060
- spacecraft_clock_stop_count
- 1/265140060
- Reference_List
-
- Source_Product_External
-
- external_source_product_identifier
- MESS-E/V/H/SW-MAG-2-EDR-RAWDATA-V1.0:maglhd123620003
- 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
- MAGLHD123620003_V1.TAB
- creation_date_time
- 2012-12-28T10:14:13.000Z
- file_size
- 13840
- md5_checksum
- 1c31e00e865abe66a29ca3513d23d1b2
- comment
- This data file is unmodified from the PDS3 version.
- Table_Character
-
- offset
- 0
- records
- 173
- record_delimiter
- Carriage-Return Line-Feed
- Record_Character
-
- fields
- 10
- groups
- 0
- record_length
- 80
- Field_Character
-
- name
- MET
- field_number
- 1
- field_location
- 1
- data_type
- ASCII_Integer
- field_length
- 12
- unit
- SECONDS
- description
- Mission elapsed time in seconds.
- Field_Character
-
- name
- LR_OFFSET_TIME0
- field_number
- 2
- field_location
- 15
- data_type
- ASCII_Integer
- field_length
- 4
- description
- The delta time offset from MET for the first low-rate
data sample in the LRHK packet (in steps of 50 milliseconds). Provides 50
msec resolution.
- Field_Character
-
- name
- MIN_INTERVAL
- field_number
- 3
- field_location
- 21
- data_type
- ASCII_Integer
- field_length
- 4
- description
- The minimum derived sampling interval in seconds.
Determined by taking the minimum time difference between successive
timestamps in the LRHK packet.
- Field_Character
-
- name
- MAX_INTERVAL
- field_number
- 4
- field_location
- 27
- data_type
- ASCII_Integer
- field_length
- 4
- description
- The maximum derived sampling interval in seconds.
Determined by taking the maximum time difference between successive
timestamps in the LRHK packet.
- Field_Character
-
- name
- NUM_LR_SAMPLES
- field_number
- 5
- field_location
- 33
- data_type
- ASCII_Integer
- field_length
- 2
- description
- Number of low-rate sample data in the LRHK packet.
- Field_Character
-
- name
- RNG_UP_TIME_DELAY
- field_number
- 6
- field_location
- 37
- data_type
- ASCII_Integer
- field_length
- 4
- description
- Samples before increasing range.
- Field_Character
-
- name
- RNG_DN_TIME_DELAY
- field_number
- 7
- field_location
- 43
- data_type
- ASCII_Integer
- field_length
- 4
- description
- Samples before decreasing range.
- Field_Character
-
- name
- MAG_DC_DC_CURR
- field_number
- 8
- field_location
- 49
- data_type
- ASCII_Real
- field_length
- 8
- description
- The derived MAG DC/DC current; used following formula:
if the DN (telemetry value) is less than 128:
MAG_DC_DC_CURR = DN/64
else
MAG_DC_DC_CURR = (DN-256)/64
The resulting value is in units of amperes.
- Field_Character
-
- name
- PROBE_TEMP
- field_number
- 9
- field_location
- 59
- data_type
- ASCII_Real
- field_length
- 9
- description
- The derived MAG probe temperature:
PROBE_TEMP = 0.0123*(DN**2) - 0.7316*DN - 144.85. Value is in units of
degrees Celsius.
- Field_Character
-
- name
- MAG_ELEC_TEMP
- field_number
- 10
- field_location
- 70
- data_type
- ASCII_Real
- field_length
- 9
- description
- The derived MAG electronics temperature:
MAG_ELEC_TEMP = (155*DN/127) - 55
The value for this column is in units of degrees Celsius.