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 = '00813771000' / Observation ID TARG_ID = '813771 ' / 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 = 542507528.19468 / Start time DATE-OBS= '2018-03-12T00:32:08.2' / Start Date TSTOP = 542507633.72638 / Stop time DATE-END= '2018-03-12T00:33:53.7' / 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 = '2018-03-12T00:33:40' / file creation date (YYYY-MM-DDThh:mm:ss UT) UTCFINIT= -20.60936 / UTCF at TSTART CHECKSUM= 'gNbSjKbRgKbRgKbR' / HDU checksum updated 2018-03-12T00:33:40 DATASUM = ' 0' / data unit checksum updated 2018-03-12T00:33:40 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 = '00813771000' / Observation ID TARG_ID = '813771 ' / 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 = '2018-03-12T00:33:40' / file creation date (YYYY-MM-DDThh:mm:ss UT) TSTART = 542507528.19468 / Start time DATE-OBS= '2018-03-12T00:32:08.2' / Start Date TSTOP = 542507633.72638 / Stop time DATE-END= '2018-03-12T00:33:53.7' / Stop Date UTCFINIT= -20.60936 / 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 = 813771 / Trigger Number XRA_OBJ = 275.024658203125 / [deg] XRT RA location GRB or Object XDEC_OBJ= 7.19040012359619 / [deg] XRT DEC location GRb or Object TERMMODE= 0 / XRT termination mode TELAPSE = 105.531700015068 / 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= -20.60936 / [s] UTC Correction TIME UTCCSEC = -21 / UTC Correction Seconds UTCCSUBS= 19532 / [2*10**(-5) s] UTC Correction SUBSeconds PKTTIME = 542507633.8448 / [s] ccsds PacKeT TIME=PKTSEC+PKTSUBS*2e-5 PKTSEC = 542507633 / ccsds PacKeT SEConds PKTSUBS = 42240 / [2*10**(-5) s] ccsds PacKeT SUBSeconds APID = 1253 / Application Process Identifier CHECKSUM= 'k9jAm6h4k6hAk6h3' / HDU checksum updated 2018-03-12T00:33:40 DATASUM = '2668864801' / data unit checksum updated 2018-03-12T00:33:40 END A+FA+OeA+@XA+|F@ApA+u@<aA+(@@ܠA+e,@?١@A+:@C4(A+ª@_% A+KMj@7kPA+@F{A+ \@PdA+ 6P@O١@A+ m@IJA+ |@D#A+ 6@= A+ e@D#A+ dE@V{A+ t@@dA+ @C4(A+*M@RLA+Z@FA+;@M A+6@F{A+L@@ATA+{@;*A+^@K*A+@> A+od@T_A+5@0ܠA+e@2@A+ M@IJA+t@> A+@SA+5@W8A++@::A+|1@ApA+=@O١@A+@@5A+Ndo@LI A+@G8A+_&@IJA+L@;*A+p@8[ A+ @::A+5@6{A+ @"@A+{J@K*A+@DA+@F{A+-d0@C4(A+_@2@A+>?@= A+Ln@7kPA+ O@EA+ ؒ@BDXA+!a5@LaA+!@FhA+"r{ @{A+":@/١@A+#@9JA+$ c@ApA+$y@F{A+%@GkPA+%L0@;*A+&._@\= A+&@oC A+'@5@GkPA+'ם@R4A+(Qz@K*A+(@UA+)b+@S4(A+)c@\I A+*t:@[fA+*i@S4(A++L@S4(A+, @] A+,@b&^A+-4@f!A+-@^q A+.0z@\aA+.@VA+/A@T#A+/cs@ZvA+0S@RLA+0۩*@B@A+1dLY@FhA+1@O١@A+2u@~ A+24@@ܠA+3@ZA+4z@QpA+4~@CA+5 @IJA+5c5@QTA+62d@IA+6@SA+7CL@QpA+7@ATA+8T@Ap