PDS_VERSION_ID = PDS3 RECORD_TYPE = "FIXED_LENGTH" RECORD_BYTES = 182 FILE_RECORDS = 9523 ^TABLE = "TEMPLOG_TV4_HRI.TAB" DATA_SET_ID = "DIF-CAL-HRII/HRIV/MRI-2-GROUND-TV4-V1.0" PRODUCT_NAME = "DEEP IMPACT TEMPERATURE LOG TV4 HRI" PRODUCT_ID = "TEMPLOG_TV4_HRI-20040326" INSTRUMENT_HOST_NAME = "DEEP IMPACT FLYBY SPACECRAFT" INSTRUMENT_ID = { "HRII", "HRIV" } TARGET_NAME = "CALIBRATION" PRODUCT_CREATION_TIME = 2004-03-26T14:33:00 START_TIME = 2003-02-22T13:07:00 /* day of year 053 */ STOP_TIME = 2003-03-12T23:59:00 /* day of year 071 */ OBJECT = TABLE INTERCHANGE_FORMAT = "ASCII" NAME = "TEMPS_TV4_HRI" ROWS = 9523 ROW_BYTES = 182 COLUMNS = 18 DESCRIPTION = "HRI IR flocal plane array (FPA) and CCD temperatures were recorded by the HRI and MRI thermister monitors, two computers, during the fourth thermal-vacuum test (TV4). Thirteen HRI temperatures were recorded: 10 by the HRI thermister monitor and 3 by the MRI thermister monitor. While both monitors sampled and recorded temperatures at approximately 5-minute intervals, sampling was not simultaneous. The 3 temperatures recorded by the MRI monitor had time stamps that differed from the HRI-recorded temperatures. To aid calibration analysis, both file were merged by the time stamps and missing temperatures were linearly interpolated. The TIME_SOURCE_ID column identifies the source of the time stamp, the HRI or MRI monitor. Temperatures (10) recorded by the HRI thermister monitor are (the spacecraft flight board the processes the temperatures are given in parantheses): HRI IR FPA assembly (A) Beam splitter (B) CCD plate assembly 1 (A) Pre-amp box (A) CCD plate assembly 2 (B) Telescope barrel at center (A) IR cooler secondary radiator (A) Primary mirror (A) Telescope barrel baffle extension (B) Telescope barrel at center (B) Temperatures (3) recorded by the MRI thermister monitor are: HRI SIM bench at prism (A) HRI SIM bench at prism (B) HRI SIM bench at rear flexure (B) For this table, rows with time stamps and temperatures recorded by the HRI thermister monitor have interpolated values for the 2 prism temperatures and the SIM bench rear flexure. Likewise, rows with time stamps and temperatures recorded by the MRI thermister monitor have interpolated values for the 10 temperatures relating to the HRI thermister monitor. All time stamps in this table are the local Mountain Standard time at the MRI and HRI thermistor monitors. Local time stamps are also in the filenames for MRI and HRI data. " OBJECT = COLUMN COLUMN_NUMBER = 1 NAME = "RECORDED_DOY_TIME" START_BYTE = 1 BYTES = 14 DATA_TYPE = "ASCII_REAL" FORMAT = "F14.8" DESCRIPTION = "This column contains the time stamp from the HRI or MRI thermister monitor in decimal day-of-year format, yyddd.hhhhhhhh where yy is the last 2 digits of the year, ddd is the day of year, and hhhhhhhh is time of day converted to a fraction of a day." NOTE = "Differences between the clock time of the thermister monitors and HRI ITOC, the ground-support computer for HRI, were not rigorously recorded during TV4. During the second half of TV4, both the HRI and MRI thermister monitors were reset at midnight. Per Dennis Wellnitz, temperature time stamps should be within one half of an hour of the ITOC time stamp that is part of the image file name. Therfore, for TV4, RECORDED_DOY_TIME values were used to populate CORRECTED_DOY_TIME." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 2 NAME = "CORRECTED_DOY_TIME" START_BYTE = 17 BYTES = 14 DATA_TYPE = "ASCII_REAL" FORMAT = "F14.8" DESCRIPTION = "This field is identical to RECORDED_DOY_TIME for TV4 temperatures. RECORDED_DOY_TIME values were used to populate CORRECTED_DOY_TIME. Values from RECORDED_DOY_TIME or CORRECTED_DOY_TIME can be used for time-based temperature analyses." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 3 NAME = "IR_FPA_TEMP" START_BYTE = 33 BYTES = 7 DATA_TYPE = "ASCII_REAL" FORMAT = "F7.3" UNIT = "KELVIN" MISSING_CONSTANT = -9.999 DESCRIPTION = "Temperature of the IR focal plane array (IR FPA), spacecraft flight board A; After thermal-vacuum 4 (TV4), Ball Aerospace personnel analyzed all IR FPA temperatures and determined the temperatures recorded by the thermister monitor needed to be adjusted by -3.26K because the cable connected to this temperature point included about 18 inches of manganin wire which resulted in higher temperature measurements due to its higher electrical resistance. All IR FPA temperatures in this column have been adjusted by -3.26K." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 4 NAME = "FLEX_TEMP" START_BYTE = 42 BYTES = 7 DATA_TYPE = "ASCII_REAL" FORMAT = "F7.3" UNIT = "KELVIN" MISSING_CONSTANT = -9.999 DESCRIPTION = "Temperature of the HRI SIM (Spectral Imaging Module) bench at the rear flexure; spacecraft flight board B" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 5 NAME = "PRISM_A_TEMP" START_BYTE = 51 BYTES = 7 DATA_TYPE = "ASCII_REAL" FORMAT = "F7.3" UNIT = "KELVIN" MISSING_CONSTANT = -9.999 DESCRIPTION = "First of two temperatures from the HRI SIM bench at the prism; spacecraft flight board A" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 6 NAME = "PRISM_B_TEMP" START_BYTE = 60 BYTES = 7 DATA_TYPE = "ASCII_REAL" FORMAT = "F7.3" UNIT = "KELVIN" MISSING_CONSTANT = -9.999 DESCRIPTION = "Second of two temperatures from the HRI SIM bench at the prism; spacecraft flight board B" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 7 NAME = "BEAM_SPLITTER_B_TEMP" START_BYTE = 69 BYTES = 7 DATA_TYPE = "ASCII_REAL" FORMAT = "F7.3" UNIT = "KELVIN" MISSING_CONSTANT = -9.999 DESCRIPTION = "Temperature of the HRI beam splitter; spacecraft flight board B" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 8 NAME = "CCD_PLATE_ASSEMBLY_A_TEMP" START_BYTE = 78 BYTES = 7 DATA_TYPE = "ASCII_REAL" FORMAT = "F7.3" UNIT = "KELVIN" MISSING_CONSTANT = -9.999 DESCRIPTION = "First of two temperatures from the HRI CCD plate assembly; spacecraft flight board A" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 9 NAME = "PREAMPB_BOX_TEMP" START_BYTE = 87 BYTES = 7 DATA_TYPE = "ASCII_REAL" FORMAT = "F7.3" UNIT = "KELVIN" MISSING_CONSTANT = -9.999 DESCRIPTION = "Temperature of the HRI pre-amp box; spacecraft flight board A" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 10 NAME = "CCD_PLATE_ASSEMBLY_B_TEMP" START_BYTE = 96 BYTES = 7 DATA_TYPE = "ASCII_REAL" FORMAT = "F7.3" UNIT = "KELVIN" MISSING_CONSTANT = -9.999 DESCRIPTION = "Second of two temperatures from the HRI CCD plate assembly; spacecraft flight board B" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 11 NAME = "AVG_PRISM_TEMP" START_BYTE = 105 BYTES = 7 DATA_TYPE = "ASCII_REAL" FORMAT = "F7.3" UNIT = "KELVIN" MISSING_CONSTANT = -9.999 DESCRIPTION = "The average of the two prism temperatures, calculated from PRISM_A_TEMP ad PRISM_B_TEMP." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 12 NAME = "TELE_BARREL_CENTER_A_TEMP" START_BYTE = 114 BYTES = 7 DATA_TYPE = "ASCII_REAL" FORMAT = "F7.3" UNIT = "KELVIN" MISSING_CONSTANT = -9.999 DESCRIPTION = "Temperature of the HRI telescope barrel at the center; spacecraft flight board A" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 13 NAME = "IR_COOLER_SECONDARY_RAD_TEMP" START_BYTE = 123 BYTES = 7 DATA_TYPE = "ASCII_REAL" FORMAT = "F7.3" UNIT = "KELVIN" MISSING_CONSTANT = -9.999 DESCRIPTION = "Temperature of the IR cooler secondary radiator; spacecraft flight board A" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 14 NAME = "PRIMARY_MIRROR_TEMP" START_BYTE = 132 BYTES = 7 DATA_TYPE = "ASCII_REAL" FORMAT = "F7.3" UNIT = "KELVIN" MISSING_CONSTANT = -9.999 DESCRIPTION = "Temperature of the HRI primary mirror; spacecraft flight board A" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 15 NAME = "TELE_BARREL_BAFFLE_EXT_TEMP" START_BYTE = 141 BYTES = 7 DATA_TYPE = "ASCII_REAL" FORMAT = "F7.3" UNIT = "KELVIN" MISSING_CONSTANT = -9.999 DESCRIPTION = "Temperature of the HRI telescope barrel baffle extension; spacecraft flight board A" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 16 NAME = "TELE_BARREL_CENTER_B_TEMP" START_BYTE = 150 BYTES = 7 DATA_TYPE = "ASCII_REAL" FORMAT = "F7.3" UNIT = "KELVIN" MISSING_CONSTANT = -9.999 DESCRIPTION = "Temperature of the HRI telescope barrel at the center; spacecraft flight board B" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 17 NAME = "TIME_SOURCE_ID" START_BYTE = 159 BYTES = 1 DATA_TYPE = "ASCII_INTEGER" FORMAT = "I1" DESCRIPTION = "An integer indentifying the source of the time stamp: For TV2, the 8 HRI temperatures could be recorded by a single thermister monitor. However, for TV4, 13 HRI temperatures were measured: 10 were recorded on the HRI thermister monitor and 3 were recorded on the MRI thermister monitor. The clocks one these monitors were not synchronized very well. 0 = For TV2, all time stamps and temperatures were taken from the HRI thermister. Temperatures were not interpolated. 1 = For TV4, the time stamp was taken from the HRI thermister monitor and the temperatures for the IR prism and the SIM bench rear flexure were interpolated. 2 = For TV4, the time stamp was taken from the MRI thermister monitor and the 10 temperatures associated with the HRI monitor were interpolated. 3 = For TV4, the time stamp was common to both monitors. All 13 HRI temperatures were recorded at the same time; interpolation was not performed." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 18 NAME = "CORRECTED_TIME" START_BYTE = 162 BYTES = 19 DATA_TYPE = "CHARACTER" FORMAT = "A19" DESCRIPTION = "The value of the decimal day-of-year time, CORRECTED_DOY_TIME, converted to a date and time and formatted as yyyy-mm-ddThh:mm:ss" END_OBJECT = COLUMN END_OBJECT = TABLE END