PDS_VERSION_ID = PDS3 /* FILE CHARACTERISTICS DATA ELEMENTS */ RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 2880 /* FITS standard record length */ FILE_RECORDS = 33 FILE_NAME = "RA_150528065045_HIS0_ENG.FIT" DATA_FORMAT = FITS /* DATA OBJECT POINTERS IDENTIFICATION DATA ELEMENTS */ ^HEADER = ("RA_150528065045_HIS0_ENG.FIT",1) ^IMAGE = ("RA_150528065045_HIS0_ENG.FIT",7) ^PULSE_HEIGHT_HEADER = ("RA_150528065045_HIS0_ENG.FIT",30) ^PULSE_HEIGHT_TABLE = ("RA_150528065045_HIS0_ENG.FIT",31) ^COUNT_RATE_HEADER = ("RA_150528065045_HIS0_ENG.FIT",32) ^COUNT_RATE_SERIES = ("RA_150528065045_HIS0_ENG.FIT",33) /* OBSERVATION AND EXPOSURE DATA ELEMENTS */ INSTRUMENT_MODE_ID = "HIS" /* HIS, PIX, CNT */ INSTRUMENT_MODE_DESC = "HISTOGRAM" START_TIME = 2015-05-28T06:50:45.290 /* UTC */ STOP_TIME = 2015-05-28T06:58:43.360 /* UTC */ SPACECRAFT_CLOCK_START_COUNT = "1/0391416568.38297" SPACECRAFT_CLOCK_STOP_COUNT = "1/0391417046.42874" EXPOSURE_DURATION = 478.069 /* SECONDS */ DATA_QUALITY_ID = "0" DATA_QUALITY_DESC = "All data packets for this file were received" MISSION_PHASE_NAME = "COMET ESCORT 2" OBSERVATION_TYPE = "N/A" TARGET_NAME = "67P/CHURYUMOV-GERASIMENKO 1 (1969 R1)" TARGET_TYPE = "COMET" TARGET_DESC = "67P/Churyumov-Gerasimenko" /* INSTRUMENT AND MISSION DESCRIPTIVE DATA ELEMENTS */ INSTRUMENT_ID = "ALICE" INSTRUMENT_NAME = "ALICE" INSTRUMENT_TYPE = "ULTRAVIOLET SPECTROMETER" INSTRUMENT_HOST_ID = "RO" INSTRUMENT_HOST_NAME = "ROSETTA-ORBITER" MISSION_ID = "ROSETTA" MISSION_NAME = "INTERNATIONAL ROSETTA MISSION" /* PRODUCT, DATA SET, AND VOLUME DATA ELEMENTS */ PRODUCT_ID = "RA_150528065045_HIS0_ENG" PRODUCT_TYPE = EDR /* CODMAC Data Level 2 */ PRODUCT_CREATION_TIME = 2015-11-30T10:09:00 DATA_SET_ID = "RO-C/CAL-ALICE-2-ESC2-V1.0" DATA_SET_NAME = "ROSETTA-ORBITER 67P/CAL ALICE 2 ESC2 V1.0" PRODUCER_ID = "ROSETTA_ALICE" PRODUCER_FULL_NAME = "ANDREW J. STEFFL" PRODUCER_INSTITUTION_NAME = "SOUTHWEST RESEARCH INSTITUTE" /* DATA OBJECT DEFINITIONS */ OBJECT = HEADER BYTES = 17280 /* RECORD_BYTES x RECORDS */ HEADER_TYPE = FITS INTERCHANGE_FORMAT = ASCII RECORDS = 6 DESCRIPTION = " FITS header for Rosetta-Alice uncalibrated (CODMAC Data Level 2) histogram observation." END_OBJECT = HEADER OBJECT = IMAGE LINE_SAMPLES = 1024 /* FITS NAXIS1 keyword */ LINES = 32 /* FITS NAXIS2 keyword */ SAMPLE_BITS = 16 SAMPLE_TYPE = MSB_INTEGER INTERCHANGE_FORMAT = BINARY OFFSET = 32768 /* FITS BZERO keyword */ SCALING_FACTOR = 1 /* FITS BSCALE keyword */ AXIS_ORDER_TYPE = FIRST_INDEX_FASTEST LINE_DISPLAY_DIRECTION = UP SAMPLE_DISPLAY_DIRECTION = RIGHT DESCRIPTION = " FITS image for Rosetta-Alice uncalibrated (CODMAC Data Level 2) histogram observation. Units are raw data numbers." END_OBJECT = IMAGE OBJECT = PULSE_HEIGHT_HEADER BYTES = 2880 /* RECORD_BYTES x RECORDS */ HEADER_TYPE = FITS INTERCHANGE_FORMAT = ASCII RECORDS = 1 DESCRIPTION = "FITS extension header" END_OBJECT = PULSE_HEIGHT_HEADER OBJECT = PULSE_HEIGHT_TABLE INTERCHANGE_FORMAT = BINARY ROWS = 16 COLUMNS = 1 ROW_BYTES = 2 DESCRIPTION = " The pulse height distribution (PHD) is a one-dimensional histogram, that bins each of the detected events (pulses) based on their 'amplitude'. Detected events are those that are larger than the discriminator setting, which is an analog (voltage) value. Of the 16 PHD bins, both the top and bottom 3 bins don't get any events (this is caused by the digitization of this amplitude information), so only 10 bins contain non-zero values. The sampling parameter interval is effectively unknown and somewhat arbitrary anyway since only the relative shape and stability of the distribution is of interest." OBJECT = COLUMN NAME = "PULSE_HEIGHT_DISTRIBUTION" DATA_TYPE = MSB_INTEGER /* 16-bit signed integers */ BYTES = 2 START_BYTE = 1 OFFSET = 32768 END_OBJECT = COLUMN END_OBJECT = PULSE_HEIGHT_TABLE OBJECT = COUNT_RATE_HEADER BYTES = 2880 /* RECORD_BYTES x RECORDS */ HEADER_TYPE = FITS INTERCHANGE_FORMAT = ASCII RECORDS = 1 DESCRIPTION = "FITS extension header" END_OBJECT = COUNT_RATE_HEADER OBJECT = COUNT_RATE_SERIES INTERCHANGE_FORMAT = BINARY ROWS = 83 /* FITS NAXIS1 keyword */ COLUMNS = 1 ROW_BYTES = 2 SAMPLING_PARAMETER_INTERVAL= 5.80000 SAMPLING_PARAMETER_NAME = TIME SAMPLING_PARAMETER_UNIT = SECONDS DESCRIPTION = " These count rate data are a vector that gives the measured count rate from the observation. Data are in units of counts per time hack interval" OBJECT = COLUMN NAME = "COUNTS" DATA_TYPE = MSB_INTEGER START_BYTE = 1 BYTES = 2 OFFSET = 32768 /* FITS BZERO keyword */ END_OBJECT = COLUMN END_OBJECT = COUNT_RATE_SERIES END