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  = '00671231000'        / Observation ID                                 TARG_ID = '671231  '           / 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  =      475077147.20862 / Start time                                     DATE-OBS= '2016-01-21T13:52:27.2' / Start Date                                  TSTOP   =      475077372.14936 / Stop time                                      DATE-END= '2016-01-21T13:56:12.1' / 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    = '2016-01-21T13:56:05' / file creation date (YYYY-MM-DDThh:mm:ss UT)   UTCFINIT=             -15.7293 / UTCF at TSTART                                 CHECKSUM= 'fIoRgFmQfFmQfFmQ'   / HDU checksum updated 2016-01-21T13:56:05       DATASUM = '         0'         / data unit checksum updated 2016-01-21T13:56:05 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  = '00671231000'        / Observation ID                                 TARG_ID = '671231  '           / 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    = '2016-01-21T13:56:05' / file creation date (YYYY-MM-DDThh:mm:ss UT)   TSTART  =      475077147.20862 / Start time                                     DATE-OBS= '2016-01-21T13:52:27.2' / Start Date                                  TSTOP   =      475077372.14936 / Stop time                                      DATE-END= '2016-01-21T13:56:12.1' / Stop Date                                   UTCFINIT=             -15.7293 / 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 =               671231 / Trigger Number                                 XRA_OBJ =     109.089462280273 / [deg] XRT RA location GRB or Object            XDEC_OBJ=     -23.564977645874 / [deg] XRT DEC location GRb or Object           TERMMODE=                    0 / XRT termination mode                           TELAPSE =     224.940739989281 / TSTOP - TSTART                                 ONTIME  =     222.543472290039 / Time on target                                 LIVETIME=     222.543472290039 / Ontime multiplied by DEADC                     EXPOSURE=     222.543472290039 / Total exposure, with all known correction      DEADC   =                   1. / dead time correction                           UTCCTIME=             -15.7293 / [s] UTC Correction TIME                        UTCCSEC =                  -16 / UTC Correction Seconds                         UTCCSUBS=                13535 / [2*10**(-5) s] UTC Correction SUBSeconds       PKTTIME =      475077372.24936 / [s] ccsds PacKeT TIME=PKTSEC+PKTSUBS*2e-5      PKTSEC  =            475077372 / ccsds PacKeT SEConds                           PKTSUBS =                12468 / [2*10**(-5) s] ccsds PacKeT SUBSeconds         APID    =                 1253 / Application Process Identifier                 CHECKSUM= 'Y3XLc3XLZ3XLa3XL'   / HDU checksum updated 2016-01-21T13:56:05       DATASUM = '2490718022'         / data unit checksum updated 2016-01-21T13:56:05 END                                                                             A¼Q5hA¼Q£]A¼Q3@YJñA¼QDFt@7kPàA¼QUŒÒ@D#øÀA¼QfÓ1@"¼@ A¼Q x@@9JñA¼Q!‰^ž@,aA¼Q"š¤ý@$›àÀA¼Q#«ë[@5‹°ÀA¼Q$½1º@?Ù¡@A¼Q%Îx@$›àÀA¼Q&ß¾w@=ú
 A¼Q'ñÕ@¼@ A¼Q)K4@:ÁA¼Q*Žó@([ àA¼Q+$ÕR@¼@ A¼Q,6°@=ú
 A¼Q-Gb@M‚ A¼Q.X¨m?íú
 A¼Q3“ö@[í A¼Q6Ö9@WÔ–A¼Q8—´¢@X£A¼Q;”[@[…@A¼Q=›t@X Ê A¼Q@U@[…@A¼QBŸ4×@Wˆ€A¼QE!@@Z¸Ó A¼QG¢òú@VˆÁ@A¼QJ$Ô@WÔ–A¼QL¦³¼@W¡‰A¼QO(“u@U‰€ A¼QQªqÞ@W»€A¼QT,Q˜@ZŸL€A¼QV®2 @V»Î@A¼QY0Z@WaàA¼Q[±ò@VU´@A¼Q^3Ð}@Uïš A¼Q`µ±…@Y9ñ@A¼Qc7‘?@V"§@A¼Qe¹pø@V<-ÀA¼Qh;P±@V<-ÀA¼Qj½/@U¼� A¼Qm?#@U‰€ A¼QoÀïÝ@UÖ A¼QrBÏ–@T½KàA¼QtįO@V»Î@A¼QwF�¹@U	߀A¼QyÈnÁ@TðYA¼Q|JN{@V<-ÀA¼Q~Ì.4@V	  A¼Q�N
í@U‰€ A¼QƒÏìW@Tp¸`A¼Q†QÍ`@VU´@A¼QˆÓ­@T=«`A¼Q‹UŒÒ@WTõ`A¼Q�×k<@U<ì€A¼Q�YJõ@V»Î@A¼Q’Û+þ@V	  A¼Q•]·@WÔ–A¼Q—Þëp@VU´@A¼Qš`ÉÚ@T½KàA¼Qœâ©“@Vo:ÀA¼QŸdŠœ@V	  A¼Q¡æjU@V"§@A¼Q¤hJ@U£ A¼Q¦ê(x@Tp¸`A¼Q©l	�@UVsA¼Q«íé:@Uoù€A¼Q®oÈó@X£A¼Q°ñ§]@VU´@A¼Q³s‡@Sב@A¼QµõfÏ@TÖÒ€A¼Q¸wGØ@SñÀA¼Qºù'‘@S¤„@A¼Q½{û@T
ž@A¼Q¿üå´@Wˆ€A¼QÂ~Åm@WTõ`A¼QŦv@Tp¸`A¼QÇ‚„à@TW1àA¼QÊd™@T½KàA¼Q̆DR@TÖÒ€A¼QÏ$@UVsA¼QÑŠÅ@WTõ`A¼QÔã~@Tp¸`A¼QÖ�Ã7@S¤„@A¼QÙ¢ð@T$$ÀA¼QÛ‘‚ª@X!) A¼QÞbc@S¤„@A¼Qà•B@S>j A¼Qã!Õ@T£Å`A¼Qå™
Ž@X!) A¼Qèßø@T
ž@A¼QêœÁ
@T½KàA¼Qí º@U	߀A¼Qï €s@V¢GÀA¼Qò"^Ý@RØPA¼Qô¤>–@TW1àA¼Q÷&O@T
ž@A¼Qù§ÿX@W!è`