--- header unit 0: primary ---
SIMPLE = T / file does conform to FITS standard
BITPIX = 8 / number of bits per data pixel
NAXIS = 0 / number of data axes
EXTEND = T / FITS dataset may contain extensions
COMMENT FITS (Flexible Image Transport System) format is defined in 'Astronomy
COMMENT and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H
TELESCOP = 'SWIFT' / Name of Satellite
DATE = '2026-04-27T13:04:53'
TSTART = 798114120.58144
TSTOP = 798114420.37258
DATE-OBS = '2026-04-17T10:21:55'
DATE-END = '2026-04-17T10:26:55'
PROCVER = '3.20.02' / Processing script version
SOFTVER = 'Hea_21Mar2024_V6.33.1_Swift_Rel5.8(Bld47)_30Jun2023_SDCpatch_2'
CALDBVER = 'b20230607_u20240201_x20260327_m20260302' / CALDB index versions used
TIMESYS = 'TT' / time system
MJDREFI = 51910 / MJD reference day 01 Jan 2001 00:00:00
MJDREFF = 0.00074287037 / MJD reference (fraction of day) 01 Jan 2001 00:
CLOCKAPP = F / If clock correction are applied (F/T)
TIMEUNIT = 's' / Time unit for timing header keywords
OBS_ID = '03622812001' / Observation ID
SEQPNUM = 4 / Number of times the dataset processed
TARG_ID = 3622812 / Target ID
SEG_NUM = 1 / Segment number
OBJECT = 'DragPointing22812' / Object name
RA_OBJ = 191.98346107751 / [deg] R.A. Object
DEC_OBJ = 67.4689705455152 / [deg] Dec Object
RA_PNT = 191.98346107751 / [deg] RA pointing
DEC_PNT = 67.4689705455152 / [deg] Dec pointing
PA_PNT = 46.97716542408 / [deg] Position angle (roll)
UTCFINIT = -37.5830600000000 / [s] UTCF at TSTART
CHECKSUM = '9LaUEJST9JYTEJYT' / HDU checksum updated 2026-04-27T13:06:02
DATASUM = '         0' / data unit checksum updated 2026-04-27T13:06:02
--- header unit 1: binary table ---
XTENSION = 'BINTABLE' / binary table extension
BITPIX = 8 / 8-bit bytes
NAXIS = 2 / 2-dimensional binary table
NAXIS1 = 24 / width of table in bytes
NAXIS2 = 4 / number of rows in table
PCOUNT = 0 / size of special data area
GCOUNT = 1 / one data group (required keyword)
TFIELDS = 4 / number of fields in each row
TTYPE1 = 'TIME' / Spacecraft clock time
TFORM1 = '1D' / data format of field: 8-byte DOUBLE
TUNIT1 = 's' / physical unit of field
TTYPE2 = 'UTCF' / UTC correction factor
TFORM2 = '1D' / data format of field: 8-byte DOUBLE
TUNIT2 = 's' / physical unit of field
TTYPE3 = 'SOURCE' / Data source, HEAD3 or LDP
TFORM3 = '6A' / data format of field: ASCII Character
TTYPE4 = 'APID' / APID of the data source
TFORM4 = '1I' / data format of field: 2-byte INTEGER
EXTNAME = 'UTCF'
TELESCOP = 'SWIFT' / Name of Satellite
TSTART = 798114126.37224
TSTOP = 798114420.37258
HISTORY CFITSIO used the following filtering expression to create this table:
HISTORY utcf_1.tmp[1][abs(UTCF) > 1E-9 && abs(UTCF) < 100]
HISTORY TASK: FMEMSORT on FILENAME: sw03622812001sti.fits[1]
HISTORY fmemsort4.1 at 2026-04-27T13:04:53
HISTORY CFITSIO used the following filtering expression to create this table:
HISTORY sw03622812001sti.fits[UTCF][(#ROW==1).or.(#ROW==#NAXIS2).or.(UTCF!=UTCF{
HISTORY -1}).or.(UTCF!=UTCF{1})]
DATE = '2026-04-27T13:04:53'
TIMESYS = 'TT' / time measured from
MJDREFI = 51910 / MJD reference day
MJDREFF = 0.00074287037 / MJD reference (fraction of day)
CLOCKAPP = F / default
TIMEUNIT = 's' / unit for time keywords
DATE-OBS = '2026-04-17T10:22:01'
DATE-END = '2026-04-17T10:26:55'
PROCVER = '3.20.02' / Processing script version
SOFTVER = 'Hea_21Mar2024_V6.33.1_Swift_Rel5.8(Bld47)_30Jun2023_SDCpatch_2'
CALDBVER = 'b20230607_u20240201_x20260327_m20260302' / CALDB index versions used
TIERRELA = 1.0E-8 / [s/s] relative errors expressed as rate
TIERABSO = 1.0 / [s] timing precision in seconds
OBS_ID = '03622812001' / Observation ID
SEQPNUM = 4 / Number of times the dataset processed
TARG_ID = 3622812 / Target ID
SEG_NUM = 1 / Segment number
OBJECT = 'DragPointing22812' / Object name
RA_OBJ = 191.98346107751 / [deg] R.A. Object
DEC_OBJ = 67.4689705455152 / [deg] Dec Object
RA_PNT = 191.98346107751 / [deg] RA pointing
DEC_PNT = 67.4689705455152 / [deg] Dec pointing
PA_PNT = 46.97716542408 / [deg] Position angle (roll)
UTCFINIT = -37.5830600000000 / [s] UTCF at TSTART
CHECKSUM = 'ZEg4d9Z4ZCd4d9Z4' / HDU checksum updated 2026-04-27T13:06:02
DATASUM = '1831378310' / data unit checksum updated 2026-04-27T13:06:02
--- header unit 2: binary table ---
XTENSION = 'BINTABLE' / binary table extension
BITPIX = 8 / 8-bit bytes
NAXIS = 2 / 2-dimensional binary table
NAXIS1 = 16 / width of table in bytes
NAXIS2 = 2 / number of rows in table
PCOUNT = 0 / size of special data area
GCOUNT = 1 / one data group (required keyword)
TFIELDS = 6 / number of fields in each row
TTYPE1 = 'TIME' / Secondary header time
TFORM1 = '1D' / data format of field: 8-byte DOUBLE
TUNIT1 = 's' / physical unit of field
TTYPE2 = 'INTERVAL' / 32 Bit Interrupt Interval Counter MSW and LSW
TFORM2 = '1J' / data format of field: 4-byte INTEGER
TZERO2 = 2147483648 / offset for unsigned integers
EXTNAME = 'UTCF_PARAMS'
HDUCLASS = 'OGIP' / Format conforms to OGIP standards
HDUCLAS1 = 'ARRAY' / Time order data
HDUCLAS2 = 'TOTAL' / Housekeeping
TIMESYS = 'TT' / time measured from
MJDREFI = 51910 / MJD reference day
MJDREFF = 0.00074287037 / MJD reference (fraction of day)
TIMEREF = 'LOCAL' / Time reference (barycenter/local)
TASSIGN = 'SATELLITE' / Time assigned by clock
TIMEUNIT = 's' / unit for time keywords
TIERRELA = 1.0E-8 / [s/s] relative errors expressed as rate
TIERABSO = 1.0 / [s] timing precision in seconds
TSTART = 798114120.58144
TSTOP = 798114418.78144
DATE-OBS = '2026-04-17T10:21:55'
DATE-END = '2026-04-17T10:26:53'
CLOCKAPP = F / default
UTCFINIT = -37.5830600000000 / [s] UTCF at TSTART
TELAPSE = 298.
TELESCOP = 'SWIFT' / Telescope (mission) name
INSTRUME = '' / Instrument name
APID = 8
OBS_ID = '03622812001' / Observation ID
TARG_ID = 3622812 / Target ID
SEG_NUM = 1 / Segment number
RA_PNT = 191.98346107751 / [deg] RA pointing
DEC_PNT = 67.4689705455152 / [deg] Dec pointing
PA_PNT = 46.97716542408 / [deg] Position angle (roll)
EQUINOX = 2000. / Equinox for pointing RA/Dec
RADECSYS = 'FK5' / Coordinates System
OBJECT = 'DragPointing22812' / Object name
RA_OBJ = 191.98346107751 / [deg] R.A. Object
DEC_OBJ = 67.4689705455152 / [deg] Dec Object
ORIGIN = 'GSFC' / Source of FITS file
PROCVER = '3.20.02' / Processing script version
SEQPNUM = 4 / Number of times the dataset processed
CREATOR = 'unpacket' / Program that created this FITS file
DATE = '2026-04-27T13:04:53'
CHECKSUM = 'XAkbX7haXAhaX7ha' / HDU checksum updated 2026-04-27T13:06:02
DATASUM = '195772682' / data unit checksum updated 2026-04-27T13:06:02
HISTORY TASK: FAPPND on FILENAME: sw03622812001s008x001.hk[1]
HISTORY fappend3.0a at 2026-04-27T13:04:46
TTYPE3 = 'ENABLED_A' / label for field
TFORM3 = '1L' / format of field
TTYPE4 = 'ENABLED_B' / label for field
TFORM4 = '1L' / format of field
TTYPE5 = 'DIRECTION_A' / label for field
TFORM5 = '1L' / format of field
TTYPE6 = 'DIRECTION_B' / label for field
TFORM6 = '1L' / format of field
HISTORY TASK: FMEMSORT on FILENAME: sw03622812001sti.fits[2]
HISTORY fmemsort4.1 at 2026-04-27T13:04:54
HISTORY CFITSIO used the following filtering expression to create this table:
HISTORY sw03622812001sti.fits[2][(#ROW==1).or.(#ROW==#NAXIS2).or.(INTERVAL!=INTE
HISTORY RVAL{1}).or.(INTERVAL.ne.INTERVAL{-1}).or.(ENABLED_A.ne.ENABLED_A{-1}).o
HISTORY r.(ENABLED_B.ne.ENABLED_B{-1}).or.(DIRECTION_A.ne.DIRECTION_A{-1}).or.(D
HISTORY IRECTION_B.ne.DIRECTION_B{-1})]
SOFTVER = 'Hea_21Mar2024_V6.33.1_Swift_Rel5.8(Bld47)_30Jun2023_SDCpatch_2'
CALDBVER = 'b20230607_u20240201_x20260327_m20260302' / CALDB index versions used