PDS_VERSION_ID = PDS3
/* FILE CHARACTERISTICS DATA ELEMENTS */
RECORD_TYPE = FIXED_LENGTH
RECORD_BYTES = 2880 /* FITS standard record length */
FILE_RECORDS = 68
FILE_NAME = "RA_151023020320_PIX0_ENG.FIT"
DATA_FORMAT = FITS
/* DATA OBJECT POINTERS IDENTIFICATION DATA ELEMENTS */
^HEADER = ("RA_151023020320_PIX0_ENG.FIT",1)
^IMAGE = ("RA_151023020320_PIX0_ENG.FIT",7)
^PIXEL_LIST_HEADER = ("RA_151023020320_PIX0_ENG.FIT",30)
^PIXEL_LIST_TIME_SERIES = ("RA_151023020320_PIX0_ENG.FIT",31)
^COUNT_RATE_HEADER = ("RA_151023020320_PIX0_ENG.FIT",54)
^COUNT_RATE_SERIES = ("RA_151023020320_PIX0_ENG.FIT",55)
/* OBSERVATION AND EXPOSURE DATA ELEMENTS */
INSTRUMENT_MODE_ID = "PIX" /* HIS, PIX, CNT */
INSTRUMENT_MODE_DESC = "PIXELLIST"
START_TIME = 2015-10-23T02:03:20.038 /* UTC */
STOP_TIME = 2015-10-23T02:04:37.963 /* UTC */
SPACECRAFT_CLOCK_START_COUNT = "1/0404186520.06947"
SPACECRAFT_CLOCK_STOP_COUNT = "1/0404186598.02030"
EXPOSURE_DURATION = 77.9250 /* SECONDS */
DATA_QUALITY_ID = "0"
DATA_QUALITY_DESC = "All data packets for this file were received"
MISSION_PHASE_NAME = "COMET ESCORT 4"
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_151023020320_PIX0_ENG"
PRODUCT_TYPE = EDR /* CODMAC Data Level 2 */
PRODUCT_CREATION_TIME = 2015-11-30T10:13:58
DATA_SET_ID = "RO-C/CAL-ALICE-2-ESC4-V2.0"
DATA_SET_NAME = "ROSETTA-ORBITER 67P/CAL ALICE 2 ESC4 V2.0"
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)
pixel list 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 = "
Reconstructed histogram image for Rosetta-Alice uncalibrated
(CODMAC Data Level 2) pixel list observation. Data are in units of
raw data numbers."
END_OBJECT = IMAGE
OBJECT = PIXEL_LIST_HEADER
BYTES = 2880 /* RECORD_BYTES x RECORDS */
HEADER_TYPE = FITS
INTERCHANGE_FORMAT = ASCII
RECORDS = 1
DESCRIPTION = "FITS extension header"
END_OBJECT = PIXEL_LIST_HEADER
OBJECT = PIXEL_LIST_TIME_SERIES
INTERCHANGE_FORMAT = BINARY
ROWS = 32767 /* FITS extension NAXIS1 */
COLUMNS = 1
ROW_BYTES = 2
SAMPLING_PARAMETER_NAME = "N/A"
SAMPLING_PARAMETER_UNIT = "N/A"
SAMPLING_PARAMETER_INTERVAL= "N/A"
DESCRIPTION = "
These pixel list data are an array up to 32767 elements that gives
the X,Y positions of every detected event. In pixel list mode, the
event addresses that are generated by the detector are stored
sequentially in the memory array, as in a list. In addition to the
detector events, a time-mark value is also inserted into the list
on a periodic basis. The data are encoded as follows:
Value (for events) = X * 1024 + Y
Value (for timehacks) > 32768
Another way to describe this is by representing the bits in the
pixel list events (16-bit words) as:
h a a a a a e e e e e e e e e e
where each letter represents a single bit with the following meaning:
h - (MSB) set to 1 for a timehack, and 0 for a normal photon event.
For timehacks, the other 15 bits are all set to 1
a - the five bits of spatial information for a photon event.
e - the ten bits of spectral information for a photon event."
OBJECT = COLUMN
NAME = "PIXEL_LIST"
DATA_TYPE = MSB_INTEGER
BYTES = 2 /* Each item is signed 16 bit integer */
START_BYTE = 1
OFFSET = 32768 /* FITS BZERO keyword */
END_OBJECT = COLUMN
END_OBJECT = PIXEL_LIST_TIME_SERIES
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 = 19891 /* FITS NAXIS1 keyword */
COLUMNS = 1
ROW_BYTES = 2
SAMPLING_PARAMETER_INTERVAL= 0.00391000
SAMPLING_PARAMETER_NAME = TIME
SAMPLING_PARAMETER_UNIT = SECONDS
DESCRIPTION = "
These count rate data are a vector that gives the count rate
measurements as reconstructed from the pixel list observation.
Units are raw 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