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 = '00671828000' / Observation ID TARG_ID = '671828 ' / 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 = 475577084.41136 / Start time DATE-OBS= '2016-01-27T08:44:44.4' / Start Date TSTOP = 475577189.98432 / Stop time DATE-END= '2016-01-27T08:46:30.0' / 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 = '2016-01-27T08:46:21' / file creation date (YYYY-MM-DDThh:mm:ss UT) UTCFINIT= -15.75626 / UTCF at TSTART CHECKSUM= 'ZDgKiAgHZAgHfAgH' / HDU checksum updated 2016-01-27T08:46:21 DATASUM = ' 0' / data unit checksum updated 2016-01-27T08:46:21 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 = '00671828000' / Observation ID TARG_ID = '671828 ' / 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 = '2016-01-27T08:46:21' / file creation date (YYYY-MM-DDThh:mm:ss UT) TSTART = 475577084.41136 / Start time DATE-OBS= '2016-01-27T08:44:44.4' / Start Date TSTOP = 475577189.98432 / Stop time DATE-END= '2016-01-27T08:46:30.0' / Stop Date UTCFINIT= -15.75626 / 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 = 671828 / Trigger Number XRA_OBJ = 225.938430786133 / [deg] XRT RA location GRB or Object XDEC_OBJ= 0.0979935824871063 / [deg] XRT DEC location GRb or Object TERMMODE= 0 / XRT termination mode TELAPSE = 105.572959959507 / 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= -15.75626 / [s] UTC Correction TIME UTCCSEC = -16 / UTC Correction Seconds UTCCSUBS= 12187 / [2*10**(-5) s] UTC Correction SUBSeconds PKTTIME = 475577190.0448 / [s] ccsds PacKeT TIME=PKTSEC+PKTSUBS*2e-5 PKTSEC = 475577190 / ccsds PacKeT SEConds PKTSUBS = 2240 / [2*10**(-5) s] ccsds PacKeT SUBSeconds APID = 1253 / Application Process Identifier CHECKSUM= 'OGAiR97gOGAgO95g' / HDU checksum updated 2016-01-27T08:46:21 DATASUM = '599184729' / data unit checksum updated 2016-01-27T08:46:21 END AXiNAXrAX_$@UOAXp3@DAX"@7kPAXh@;*AXO@B@AX@2@AX< @EAX؂k@5AXz@@dAX @?١@AX T7@@dAX F@1pAX .ߤ@8[ AX @&@Nq AX Qla@9JAX b@O١@AXs@F{AX?}@6{AX@FAX:@CAX@?١@AXW@,aAX۞@&{AXe@3AX*@9JAXq"@8[ AX 1@/١@AX1@8[ AXCB@,aAXTL@G8AXe[@@dAXw@UAX[@?١@AX w@&{AX!@FhAX".4@> AX#t@7kPAX$޺@EAX%P@> AX'G@F{AX(@/١@AX)#@DAX*5z@([ AX+F_@QAX,W7@> AX-hF@1pAX.z1@1pAX/x@FhAX0b@4AX1q@6{AX2I@M AX3А.@ATAX4֌@GkPAX5@SAX7cI@- AX8@- AX9&@FAX:86e@{AX;I|@  AX}N@0ܠAX?@{AX@@4AXA \@PܠAXBf@FhAXCӭ@<aAXDw@*:AXE8@FhAXG~@&{AXHC@7kPAXI* @BDXAXJ;R@{AXKL_@*:AXL]޾@1pAXMo%@LaAXNk{@,aAXO@,aAXP@:AXQ=G@ATAXRłV@7kPAXSȴ@{AXT@1pAXUUq@/١@AXW @2@AXX.@9JAXY-(@BDXAXZ>m@/١@AX[O@3AX\`Y@EAX]r@@ApAX^@0ܠAX_u@1pAX`@@dAXaZ2@,aAXbȠ@{AXcP@<aAXd*@,a