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 = '00867987000' / Observation ID TARG_ID = '867987 ' / 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 = 561754916.20912 / Start time DATE-OBS= '2018-10-20T19:01:56.2' / Start Date TSTOP = 561755021.83576 / Stop time DATE-END= '2018-10-20T19:03:41.8' / 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 = '2018-10-20T19:03:27' / file creation date (YYYY-MM-DDThh:mm:ss UT) UTCFINIT= -21.7859 / UTCF at TSTART CHECKSUM= 'WFlOaElLYElLaElL' / HDU checksum updated 2018-10-20T19:03:27 DATASUM = ' 0' / data unit checksum updated 2018-10-20T19:03:27 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 = '00867987000' / Observation ID TARG_ID = '867987 ' / 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 = '2018-10-20T19:03:27' / file creation date (YYYY-MM-DDThh:mm:ss UT) TSTART = 561754916.20912 / Start time DATE-OBS= '2018-10-20T19:01:56.2' / Start Date TSTOP = 561755021.83576 / Stop time DATE-END= '2018-10-20T19:03:41.8' / Stop Date UTCFINIT= -21.7859 / 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 = 867987 / Trigger Number XRA_OBJ = 13.9794445037842 / [deg] XRT RA location GRB or Object XDEC_OBJ= -47.3928298950195 / [deg] XRT DEC location GRb or Object TERMMODE= 0 / XRT termination mode TELAPSE = 105.626639962196 / 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= -21.7859 / [s] UTC Correction TIME UTCCSEC = -22 / UTC Correction Seconds UTCCSUBS= 10705 / [2*10**(-5) s] UTC Correction SUBSeconds PKTTIME = 561755021.9292 / [s] ccsds PacKeT TIME=PKTSEC+PKTSUBS*2e-5 PKTSEC = 561755021 / ccsds PacKeT SEConds PKTSUBS = 46460 / [2*10**(-5) s] ccsds PacKeT SUBSeconds APID = 1253 / Application Process Identifier CHECKSUM= 'CnknFlinClinClin' / HDU checksum updated 2018-10-20T19:03:27 DATASUM = '2284307066' / data unit checksum updated 2018-10-20T19:03:27 END AْrAْQAْ}@pAٓ%n@b:Aٓ@bbRAٔ6 @fnAٔX:@bLAٕGj@b4AٕН@bdAٖYA @bbRAٖP@e1Aٗj@cR"Aٗ*@d_A٘{6@eǤAٙpe@_% Aٙ@bbRAٚ@dAٚYK@eAٛ&z@bLAٛ@c4(Aٜ8B1@eOAٜ`@dAٝI@b&^Aٝ+@bdAٞZF@bLAٞqv@` ʠAٟl@ajAٟ@apA٠}[@] 1 A١3@aA١@[mA٢CB@` ʠA٢q@`A٣(@[fA٣,@a6A٤9@cR"A٤s.@] A٥K@_@A٥Ӹ@[yA٦\\@] 1 A٦C@a|A٧m@YJA٧D@\I A٨~)@aA٩@YJA٩-@XA٪@dA٪t?@bdA٫*n@^ A٫@V{A٬;]%@eA٬T@YA٭L@YA٭F @VAٮ]:@]F% Aٮi@TAٯo/@[fAٯ@XAٰu@_@Aٱ @[fAٱ@_a@Aٲ^5@XAٲe@YAٳ+@T_AٳG@[yAٴ<@YAٴōz@[yAٵN0@ZAٵ@`Aٶ_w@R4Aٶ@_١@Aٷp@QpAٷ_@d#Aٸu@W8Aٹ @cAٹH@e1Aٺ@VtAٺ2@VtAٻ-2a@UAٻ@S4(Aټ>wp@WkPAټ@RdAٽO@W8Aٽ`@YJAپa.@TAپ]@VtAٿrJ@RDXAٿ@W/\A@VA 2@QTA@dAy)@\VU A¦X@`A.@[fA÷b@ZA@>@XAȨm@avAQK@\VU A$@_a@AbS@b@