PDS_VERSION_ID = PDS3 RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 434 FILE_RECORDS = 28620 ^INDEX_TABLE = "VIDINDEX.TAB" INSTRUMENT_HOST_NAME = "MESSENGER" INSTRUMENT_NAME = " MERCURY ATMOSPHERIC AND SURFACE COMPOSITION SPECTROMETER" START_TIME = 2008-01-14T19:12:55.0 STOP_TIME = 2015-04-30T09:47:27.0 PRODUCT_CREATION_TIME = 2017-04-10T17:15:13.0 OBJECT = INDEX_TABLE INDEX_TYPE = SINGLE INTERCHANGE_FORMAT = ASCII ROWS = 28620 ROW_BYTES = 434 COLUMNS = 19 DESCRIPTION = " This table contains the volume index of all VIRS DDR data files in this volume. Each record of this index consists of comma delimited data columns folowed by an ASCII carriage-return and line-feed. The row bytes value includes not only the lengths of the values themselves, but also any quotes, the commas, and the carriage-return / line-feed characters." OBJECT = COLUMN NAME = VOLUME_ID COLUMN_NUMBER = 1 START_BYTE = 2 BYTES = 12 DATA_TYPE = CHARACTER DESCRIPTION = "The PDS VOLUME_ID." END_OBJECT = COLUMN OBJECT = COLUMN NAME = FILE_SPECIFICATION_NAME COLUMN_NUMBER = 2 START_BYTE = 17 BYTES = 68 DATA_TYPE = CHARACTER DESCRIPTION = "Fully qualified name of the data file, relative to the volume root directory" END_OBJECT = COLUMN /* Note that the file specification orginates at the root, so no */ /* logical volume path name is included. */ OBJECT = COLUMN NAME = MISSION_PHASE_NAME COLUMN_NUMBER = 3 START_BYTE = 88 BYTES = 20 DATA_TYPE = CHARACTER DESCRIPTION = "The mission phase during which the observations were obtained." END_OBJECT = COLUMN OBJECT = COLUMN NAME = TARGET_NAME COLUMN_NUMBER = 4 START_BYTE = 111 BYTES = 20 DATA_TYPE = CHARACTER DESCRIPTION = "The target observed." END_OBJECT = COLUMN OBJECT = COLUMN NAME = SITE_ID COLUMN_NUMBER = 5 START_BYTE = 134 BYTES = 61 DATA_TYPE = CHARACTER DESCRIPTION = "SITE_ID from the PDS label." END_OBJECT = COLUMN OBJECT = COLUMN NAME = PRODUCT_ID COLUMN_NUMBER = 6 START_BYTE = 198 BYTES = 31 DATA_TYPE = CHARACTER DESCRIPTION = "PRODUCT_ID from the PDS label." END_OBJECT = COLUMN OBJECT = COLUMN NAME = PRODUCT_VERSION_ID COLUMN_NUMBER = 7 START_BYTE = 232 BYTES = 3 DATA_TYPE = CHARACTER DESCRIPTION = "PRODUCT_VERSION_ID from the PDS label." END_OBJECT = COLUMN OBJECT = COLUMN NAME = PRODUCT_CREATION_TIME COLUMN_NUMBER = 8 START_BYTE = 237 BYTES = 19 DATA_TYPE = TIME DESCRIPTION = "Creation time from the PDS label." END_OBJECT = COLUMN OBJECT = COLUMN NAME = DATA_SET_ID COLUMN_NUMBER = 9 START_BYTE = 258 BYTES = 40 DATA_TYPE = CHARACTER DESCRIPTION = "DATA_SET_ID from the PDS label." END_OBJECT = COLUMN OBJECT = COLUMN NAME = STANDARD_DATA_PRODUCT_ID COLUMN_NUMBER = 10 START_BYTE = 301 BYTES = 11 DATA_TYPE = CHARACTER DESCRIPTION = "STANDARD_DATA_PRODUCT_ID from the PDS label. Identifies the data product in the volume archive." END_OBJECT = COLUMN OBJECT = COLUMN NAME = START_TIME COLUMN_NUMBER = 11 START_BYTE = 314 BYTES = 19 DATA_TYPE = TIME DESCRIPTION = "The UTC START_TIME value from the PDS label." END_OBJECT = COLUMN OBJECT = COLUMN NAME = STOP_TIME COLUMN_NUMBER = 12 START_BYTE = 334 BYTES = 19 DATA_TYPE = TIME DESCRIPTION = "The UTC STOP_TIME value from the PDS label." END_OBJECT = COLUMN OBJECT = COLUMN NAME = START_MET_PARTITION COLUMN_NUMBER = 13 START_BYTE = 354 BYTES = 3 DATA_TYPE = ASCII_INTEGER DESCRIPTION = "The MET partition (roll-over count) associated with the SPACECRAFT_CLOCK_START_COUNT value (column 14). This value is incremented by 1 for every instance where MET values have been reset." END_OBJECT = COLUMN OBJECT = COLUMN NAME = SPACECRAFT_CLOCK_START_COUNT COLUMN_NUMBER = 14 START_BYTE = 359 BYTES = 15 DATA_TYPE = CHARACTER DESCRIPTION = "The SPACECRAFT_CLOCK_START_COUNT value from the PDS label. This is the MET of the first observation in the data file." END_OBJECT = COLUMN OBJECT = COLUMN NAME = SPACECRAFT_CLOCK_STOP_COUNT COLUMN_NUMBER = 15 START_BYTE = 377 BYTES = 15 DATA_TYPE = CHARACTER DESCRIPTION = "The SPACECRAFT_CLOCK_STOP_COUNT value from the PDS label. This is the MET of the last observation in the data file." END_OBJECT = COLUMN OBJECT = COLUMN NAME = INT_TIME COLUMN_NUMBER = 16 START_BYTE = 394 BYTES = 5 DATA_TYPE = ASCII_INTEGER DESCRIPTION = "Amount of time the array detectors will integrate photon counts. Unit is 0.05 second." END_OBJECT = COLUMN OBJECT = COLUMN NAME = DARK_FREQ COLUMN_NUMBER = 17 START_BYTE = 400 BYTES = 5 DATA_TYPE = ASCII_INTEGER DESCRIPTION = "Dark counts will be collected every X integrations during a VIRS observation." END_OBJECT = COLUMN OBJECT = COLUMN NAME = BINNING COLUMN_NUMBER = 18 START_BYTE = 406 BYTES = 5 DATA_TYPE = ASCII_INTEGER DESCRIPTION = "Number of pixels that were binned together in the data. A flight-software update during the mission changed how the pixels were binned. For data with SPECTRUM_UTC_TIME prior to March 16, 2009, the pixels were co-added. For data with SPECTRUM_UTC_TIME on or after March 16, 2009, the multiple pixels were averaged." END_OBJECT = COLUMN OBJECT = COLUMN NAME = SUMMARY_DATA_QUALITY COLUMN_NUMBER = 19 START_BYTE = 413 BYTES = 19 DATA_TYPE = CHARACTER DESCRIPTION = "The cumulative data quality string created by evaluating the DATA_QUALITY_INDEX for all the records in the DDR. Format: ABCD-EFGH-IJKL-MNOP. A: =1 if at least one record has the shutter commanded closed. =0 if all records have the shutter open. B: Maximum value of the Temperature 1 flag. From 0-3. C: Maximum value of the Temperature 2 flag. From 0-3. D: Maximum value of the Grating Temperature Flag. From 0-3. E: The sum of all anomalous pixels found per record. From 0-9. If maximum value is greater than 9 it is set to 9. F: The sum of all partial data flags. From 0-9. If maximum value is greater than 9 it is set to 9. G: The sum of all saturation flags. From 0-9. If maximum value is greater than 9 it is set to 9. H: =1 if at least one record has a signal level below threshold. =0 if all signals are above the low signal threshold. I: Maximum value of the Low VIS Wavelength Uncertainty flag. Not yet implemented in the DDR. Hardcoded to 0. J: Maximum value of the High VIS Wavelength Uncertainty Flag. Not yet implemented in the DDR. Hardcoded to 0. K: =1 if UVVS was scanning at any time during the observation. =0 if UVVS was not scanning at all during the observation. L: =1 if UVVS noise spike was detected during the observation. =0 if no UVVS noise spike detected during the observation. M: Minimum value of the SPICE version Epoch flag. from 0-2. N: Dark Saturation Flag, denotes that there are minimal unsaturated dark frames available for the polynomial fit of one or more pixels. This flag is applied to the entire CDR =1 if the Dark Saturation Flag is set on all records =0 if the Dark Saturation Flag is not set on all records O-P: spares. hardcoded to 0." END_OBJECT = COLUMN END_OBJECT = INDEX_TABLE END