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 = '00797070000' / Observation ID TARG_ID = '797070 ' / 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 = 534917850.80918 / Start time DATE-OBS= '2017-12-14T04:17:30.8' / Start Date TSTOP = 534918088.68386 / Stop time DATE-END= '2017-12-14T04:21:28.7' / 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 = '2017-12-14T04:22:42' / file creation date (YYYY-MM-DDThh:mm:ss UT) UTCFINIT= -20.15248 / UTCF at TSTART CHECKSUM= 'cJdMfHbMcHbMcHbM' / HDU checksum updated 2017-12-14T04:22:42 DATASUM = ' 0' / data unit checksum updated 2017-12-14T04:22:42 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 = '00797070000' / Observation ID TARG_ID = '797070 ' / 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 = '2017-12-14T04:22:42' / file creation date (YYYY-MM-DDThh:mm:ss UT) TSTART = 534917850.80918 / Start time DATE-OBS= '2017-12-14T04:17:30.8' / Start Date TSTOP = 534918088.68386 / Stop time DATE-END= '2017-12-14T04:21:28.7' / Stop Date UTCFINIT= -20.15248 / 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 = 797070 / Trigger Number XRA_OBJ = 41.1830673217773 / [deg] XRT RA location GRB or Object XDEC_OBJ= 15.3234596252441 / [deg] XRT DEC location GRb or Object TERMMODE= 0 / XRT termination mode TELAPSE = 237.874679982662 / TSTOP - TSTART ONTIME = 235.501647949219 / Time on target LIVETIME= 235.501647949219 / Ontime multiplied by DEADC EXPOSURE= 235.501647949219 / Total exposure, with all known correction DEADC = 1. / dead time correction UTCCTIME= -20.15248 / [s] UTC Correction TIME UTCCSEC = -21 / UTC Correction Seconds UTCCSUBS= 42376 / [2*10**(-5) s] UTC Correction SUBSeconds PKTTIME = 534918088.73062 / [s] ccsds PacKeT TIME=PKTSEC+PKTSUBS*2e-5 PKTSEC = 534918088 / ccsds PacKeT SEConds PKTSUBS = 36531 / [2*10**(-5) s] ccsds PacKeT SUBSeconds APID = 1253 / Application Process Identifier CHECKSUM= '7nCBAmCB9mCBAmCB' / HDU checksum updated 2017-12-14T04:22:42 DATASUM = '2879533247' / data unit checksum updated 2017-12-14T04:22:42 END A2&lA2<A2I@R4A2׏@*:A2M@ ܠA2\@C4(A2 a@T_A2@H[ A2-x@*:A2?4@ A2P{5A2[@$KA2 d@.OA2@'!`A2@+ A2j@@+!@A2I@'A2)@)A2 l@'A2t@+ A3.@'!`A3@(PA3 @'A3h @-A3 $G@'!`A3 '|@% A3(@'!`A3>@'A3+@(PA3@'!`A3/j@'!`A3g#@*RA33E@+!@A3 &@*RA3#7O@'A3%@-A3(:@*RA3*z@*RA3->4@+ A3/d@+ A32BE@-A34$_@(PA37F@*RA39@)A3ˣD@'A3AM@*RA3Cd@*RA3FQC@(PA3H")@*RA3KU@+!@A3M@(PA3PXU@'A3Rڡ@'!`A3U\@'!`A3Wa@*RA3Z`A@+!@A3\@(PA3_c@)A3ae@.OA3dg@'!`A3f@-A3ik@+ A3k_@,UA3no>@(PA3p@'!`A3srv@(PA3u/@.OA3xv@'!`A3z@+!@A3}z}@/A3]d@+!@A3~;@(PA3@'A3@@% A3@&U@A3@$KA3@+!@A3{t@)A3 Y@$KA39@*RA3P@*RA3 @+ A3@*RA3|@*RA3@/A3w@% A3W@&U@A37a@*RA3@'!`A3@*RA3!֌@'!`A3F@'A3%@)A3u@*RA3)Uq@(PA35+@&U@A3-@*RA3î@(PA30@'!`