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 = '00863053000' / Observation ID TARG_ID = '863053 ' / 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 = 559441030.41304 / Start time DATE-OBS= '2018-09-24T00:17:10.4' / Start Date TSTOP = 559441275.48844 / Stop time DATE-END= '2018-09-24T00:21:15.5' / 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 = '2018-09-24T00:21:57' / file creation date (YYYY-MM-DDThh:mm:ss UT) UTCFINIT= -21.64232 / UTCF at TSTART CHECKSUM= 'hLgOhKZMhKfMhKZM' / HDU checksum updated 2018-09-24T00:21:57 DATASUM = ' 0' / data unit checksum updated 2018-09-24T00:21:57 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 = '00863053000' / Observation ID TARG_ID = '863053 ' / 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 = '2018-09-24T00:21:57' / file creation date (YYYY-MM-DDThh:mm:ss UT) TSTART = 559441030.41304 / Start time DATE-OBS= '2018-09-24T00:17:10.4' / Start Date TSTOP = 559441275.48844 / Stop time DATE-END= '2018-09-24T00:21:15.5' / Stop Date UTCFINIT= -21.64232 / 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 = 863053 / Trigger Number XRA_OBJ = 267.593841552734 / [deg] XRT RA location GRB or Object XDEC_OBJ= -31.7707462310791 / [deg] XRT DEC location GRb or Object TERMMODE= 0 / XRT termination mode TELAPSE = 245.07539999485 / TSTOP - TSTART ONTIME = 242.700622558594 / Time on target LIVETIME= 242.700622558594 / Ontime multiplied by DEADC EXPOSURE= 242.700622558594 / Total exposure, with all known correction DEADC = 1. / dead time correction UTCCTIME= -21.64232 / [s] UTC Correction TIME UTCCSEC = -22 / UTC Correction Seconds UTCCSUBS= 17884 / [2*10**(-5) s] UTC Correction SUBSeconds PKTTIME = 559441275.5248 / [s] ccsds PacKeT TIME=PKTSEC+PKTSUBS*2e-5 PKTSEC = 559441275 / ccsds PacKeT SEConds PKTSUBS = 26240 / [2*10**(-5) s] ccsds PacKeT SUBSeconds APID = 1253 / Application Process Identifier CHECKSUM= 'Np5oPo2mNo2mNo2m' / HDU checksum updated 2018-09-24T00:21:57 DATASUM = '2765206682' / data unit checksum updated 2018-09-24T00:21:57 END A2C4A2CkFA2C/@UA2D;^@:A2D@@$A2ELA2G;@,UA2I)+@+!@A2Jj\@+ A2K 9@'A2L@-A2N,@(PA2Omw@,UA2PS@,UA2Q0@*RA2S0 @-A2Tq@)A2Un@'A2Vz@+ A2X4j@'!`A2YuZ\@)A2ZJ8@)A2[:@-A2]8)@'A2^yv@+!@A2_ R@+ A2`/@(PA2b; @/& A2c|@+ A2d@+ A2eI@,UA2g?&@+ A2h@(PA2i@'A2ky@'A2lCi@)A2mYu@)A2nI@+ A2p9@'!`A2qG) @+!@A2r@+ A2s@(PA2u @*RA2vJ}@.OA2w@*RA2x@'A2z @+!@A2{N@*RA2|t@+!@A2}ЈQ@'A2x@*RA2Rh@(PA2X@)A2Hk@-A28G@'A2V($@'!`A2@(PA2@2ɀA2b@+ A2Y>@'A2@+ A2@*RA2@+!@A2]X@(PA25@-A2߈@+ A2 w@(PA2ag@'A2W@+!@A2G@(PA2$7a@)A2e'=@'A2@(PA2@'A2'@)A2hX@'!`A24@*RA2@*RA2+@,UA2l@+ A2@)A2+@'A2/w@*RA2pf@,UA2V@*RA2F@,UA236z@(PA2t&@*RA2@+!@A2@'A26@,UA2wq@/A2M@+!@A2@+!@A2:@#A2{@+!@A2h@*RA2D@'!`A2>v!@(PA2f@*R