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 'AstronomyCOMMENT and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H TELESCOP= 'SWIFT ' / Telescope (mission) name INSTRUME= 'XRT ' / Instrument name OBS_ID = '01069242000' / Observation ID TARG_ID = '1069242 ' / Target ID SEG_NUM = '0 ' / Segment number TIMESYS = 'TT ' / Time system MJDREFI = 51910. / Reference MJD Integer part MJDREFF = 0.00074287037 / Reference MJD fractional TIMEUNIT= 's ' / Time unit for the time header keywords TIERRELA= 1.0E-08 / [s/s] Estimated relative clock rate error TIERABSO= 1. / [s] Estimated absolute clock offset error TSTART = 650996390.60966 / Start time DATE-OBS= '2021-08-18T16:19:50.6' / Start Date TSTOP = 650996496.18746 / Stop time DATE-END= '2021-08-18T16:21:36.2' / Stop Date CLOCKAPP= F / If clock correction are applied (F/T) ORIGIN = 'GSFC ' / Source of FITS file CREATOR = 'TDRSS2FITS V3.21' / Program that created this FITS file TLM2FITS= 'V3.21 ' / Telemetry converter version number DATE = '2021-08-18T16:21:15' / file creation date (YYYY-MM-DDThh:mm:ss UT) UTCFINIT= -27.57104 / UTCF at TSTART CHECKSUM= 'aEbLbDaIaDaIaDaI' / HDU checksum updated 2021-08-18T16:21:15 DATASUM = ' 0' / data unit checksum updated 2021-08-18T16:21:15 END XTENSION= 'BINTABLE' / binary table extension BITPIX = 8 / 8-bit bytes NAXIS = 2 / 2-dimensional binary table NAXIS1 = 18 / width of table in bytes NAXIS2 = 100 / number of rows in table PCOUNT = 0 / size of special data area GCOUNT = 1 / one data group (required keyword) TFIELDS = 3 / number of fields in each row TTYPE1 = 'TIME ' / label for field 1 TFORM1 = '1D ' / data format of field: 8-byte DOUBLE TUNIT1 = 's ' / physical unit of field TTYPE2 = 'RATE ' / label for field 2 TFORM2 = '1D ' / data format of field: 8-byte DOUBLE TUNIT2 = 'count/s ' / physical unit of field TTYPE3 = 'XRTMODE ' / label for field 3 TFORM3 = '1I ' / data format of field: 2-byte INTEGER EXTNAME = 'RATE ' / name of this binary table extension MESGNAME= 'XRT_LIGHTCURVE' / Name of the message COMMENT XRTMODE values COMMENT 1=null 2=Short Image 3=Long Image 4=Pile-Up Photodiode COMMENT 5=Low Rate Photodiode 6=Windowed Timing 7= Photon-Counting COMMENT 8=RAW data 9=Bias map 10=Stop TELESCOP= 'SWIFT ' / Telescope (mission) name INSTRUME= 'XRT ' / Instrument name OBS_ID = '01069242000' / Observation ID TARG_ID = '1069242 ' / Target ID SEG_NUM = '0 ' / Segment number CREATOR = 'TDRSS2FITS V3.21' / Program that created this FITS file ORIGIN = 'GSFC ' / Source of FITS file TLM2FITS= 'V3.21 ' / Telemetry converter version number EQUINOX = 2000 / Equinox RADECSYS= 'FK5 ' / Coordinates system TIMESYS = 'TT ' / Time system MJDREFI = 51910. / Reference MJD Integer part MJDREFF = 0.00074287037 / Reference MJD fractional TIMEUNIT= 's ' / Time unit for the time header keywords TIERRELA= 1.0E-08 / [s/s] Estimated relative clock rate error TIERABSO= 1. / [s] Estimated absolute clock offset error CLOCKAPP= F / If clock correction are applied (F/T) TIMEREF = 'LOCAL ' / Time reference (barycenter/local) TASSIGN = 'SATELLITE' / Time assigned by clock DATE = '2021-08-18T16:21:15' / file creation date (YYYY-MM-DDThh:mm:ss UT) TSTART = 650996390.60966 / Start time DATE-OBS= '2021-08-18T16:19:50.6' / Start Date TSTOP = 650996496.18746 / Stop time DATE-END= '2021-08-18T16:21:36.2' / Stop Date UTCFINIT= -27.57104 / UTCF at TSTART TIMEPIXR= 0. / Bin time beginning=0.0 middle=0.5 end=1. HDUCLASS= 'OGIP ' / Format conforms to OGIP standards HDUCLAS1= 'LIGHTCURVE' / Time ordered data HDUCLAS2= 'TOTAL ' / Source + background HDUCLAS3= 'RATE ' / Data provided as rate NUMBINS = 100 / Number of valid bins in the lightcurve TRIGGER = 1069242 / Trigger Number XRA_OBJ = 299.638488769531 / [deg] XRT RA location GRB or Object XDEC_OBJ= 35.2042045593262 / [deg] XRT DEC location GRb or Object TERMMODE= 0 / XRT termination mode TELAPSE = 105.577799916267 / TSTOP - TSTART ONTIME = 107.359703063965 / Time on target LIVETIME= 107.359703063965 / Ontime multiplied by DEADC EXPOSURE= 107.359703063965 / Total exposure, with all known correction DEADC = 1. / dead time correction UTCCTIME= -27.57104 / [s] UTC Correction TIME UTCCSEC = -28 / UTC Correction Seconds UTCCSUBS= 21448 / [2*10**(-5) s] UTC Correction SUBSeconds PKTTIME = 650996496.25826 / [s] ccsds PacKeT TIME=PKTSEC+PKTSUBS*2e-5 PKTSEC = 650996496 / ccsds PacKeT SEConds PKTSUBS = 12913 / [2*10**(-5) s] ccsds PacKeT SUBSeconds APID = 1253 / Application Process Identifier CHECKSUM= 'mad4nZb1mab1mWb1' / HDU checksum updated 2021-08-18T16:21:15 DATASUM = '3491204786' / data unit checksum updated 2021-08-18T16:21:15 END AfSN WAfSAfS֌@ AfTRy@1 AfT@bAfUcr@ㅠAfUb@hwAfVu@%AfV@A`AfWK@( AfX@1`AfX@AfY 5@`AfYם@B`AfZ1z@(AfZ@^Af[B+@ Af[c @+PAf\T:@ Af\ܩi@hwAf]eL@١@Af] @FAf^vO@4`Af^5~@bAf_@Af`{5@`Af`d@띠Afa!@EAfad@LAfb3J@`Afb@ AfcDM@^Afc@ AfdU@ȱ`Afd5@ Afef@`Afe{@Affx@" Afg@;Afgd@IJAfh@%`Afh@@Afi#N@`Afi@EAfj4!@;Afj6P@\AfkE@i Afk|@ AflW6@Afle@XGAfmhe@띠Afm@BAfnyK@YzAfoN{@qOAfo@Afp1@`Afp7a@Afq$@4(Afq|p@ Afr6@hwAfr@TAfsGe@Z Afs@P`AftX@;AftN@7Afui@i Afu@)Afv{7@pAfw@ Afw|@Afx @\ Afx7@2`Afy&ff@Afy@ Afz7@9AfzOL@`Af{H|@UAf{ѕ@BAf|Z82@ VAf|b@2`Af}k~@Af}!@% Af~|H@ Aff@@Af @B`Af@@AfO@`Af'@`Afl@`Af98@Af@AfJ~@P`Af!@ Af[ı@1 Afg@Afm g@`Af@Y@Af~P@K AfM@k Af}@P`