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 = '01071768000' / Observation ID TARG_ID = '1071768 ' / 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 = 652370847.79474 / Start time DATE-OBS= '2021-09-03T14:07:27.8' / Start Date TSTOP = 652370953.43 / Stop time DATE-END= '2021-09-03T14:09:13.4' / 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 = '2021-09-03T14:16:24' / file creation date (YYYY-MM-DDThh:mm:ss UT) UTCFINIT= -27.66304 / UTCF at TSTART CHECKSUM= 'lMhMoMZKlMfKlMZK' / HDU checksum updated 2021-09-03T14:16:24 DATASUM = ' 0' / data unit checksum updated 2021-09-03T14:16:24 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 = '01071768000' / Observation ID TARG_ID = '1071768 ' / 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 = '2021-09-03T14:16:24' / file creation date (YYYY-MM-DDThh:mm:ss UT) TSTART = 652370847.79474 / Start time DATE-OBS= '2021-09-03T14:07:27.8' / Start Date TSTOP = 652370953.43 / Stop time DATE-END= '2021-09-03T14:09:13.4' / Stop Date UTCFINIT= -27.66304 / 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 = 1071768 / Trigger Number XRA_OBJ = 299.556030273438 / [deg] XRT RA location GRB or Object XDEC_OBJ= 34.9419631958008 / [deg] XRT DEC location GRb or Object TERMMODE= 0 / XRT termination mode TELAPSE = 105.635259985924 / 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= -27.66304 / [s] UTC Correction TIME UTCCSEC = -28 / UTC Correction Seconds UTCCSUBS= 16848 / [2*10**(-5) s] UTC Correction SUBSeconds PKTTIME = 652370953.54164 / [s] ccsds PacKeT TIME=PKTSEC+PKTSUBS*2e-5 PKTSEC = 652370953 / ccsds PacKeT SEConds PKTSUBS = 27082 / [2*10**(-5) s] ccsds PacKeT SUBSeconds APID = 1253 / Application Process Identifier CHECKSUM= 'ibLfjaJZiaJfiaJZ' / HDU checksum updated 2021-09-03T14:16:24 DATASUM = '3847877372' / data unit checksum updated 2021-09-03T14:16:24 END Aq1 Aq1*Aq1hٔ@xAq1|@rIAq1zK@tAq1z@m Aq1ҋe@hAq1@tAq1Ӝ@uǤAq1%N@ihAq1ԭ@m Aq16@k Aq1տ8@qvAq1GM@lI Aq1}@rLAq1Y!@sAq13@pAq1jgb@o@Aq1 @vwAq1{@s1Aq1PH@tAq1ڌw@kHAq1@rIAq1۞9.@weAq1&]@zIAq1ܯ@qAq18"@r=Aq1@q'Aq1Ihs@uAq1 @pAq1Z@tAq1R@ltO Aq1k0@gJAq1@l= Aq1}:@sAq1@o@Aq1⎁E@qyAq1$t@raAq1@zAq1(j+@rdAq1 Z@h,Aq19@jAq1S@raAq1J@@u@Aq1әp@qrAq1\<@nS Aq1@jAq1m@pAq1&-@qpAq1~\@v{Aq1l@s%+Aq1@o@Aq1B@psAq1Uq@o@Aq1)@ksAq1첛@vzAq1;>@s Aq1@uAq1L@o@Aq1'@pAq1]@p ʠAq1m@qEAq1o@r7Aq1@tAq1W*@pǠAq1Y@o@Aq1@sR"Aq1@@qEAq1?@kyAq1+n@qAq1)@{ Aq1<%@p(ĠAq1oT@n Aq1N@rLAq1ֵ@spAq1_X@tAq1j@m Aq1p@q6Aq1A@pAq1@rFAq1 '@r@Aq1*@s1Aq1@s1Aq1q @oa@Aq1-<@o@Aq1@rIAq1>Y@pAq1"@} Aq1OQ@u"Aq1C@pAq1`@m Aq17@w>YAq2r,g@qrAq2ϖ@vAq2r@qsAq2 M@sAq2|@vNAq2[@o@Aq2@pUAq2. @r@