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 = '00310219000' / Observation ID TARG_ID = '310219 ' / Target ID SEG_NUM = '0 ' / Segment number TIMESYS = 'TT ' / time system MJDREFI = 51910 / MJD reference day 01 Jan 2001 00:00:00 MJDREFF = 0.00074287037 / MJD reference (fraction of day) 01 Jan 2001 00:TIMEUNIT= 's ' / Time unit for timing header keywords TIERRELA= 1.0E-08 / [s/s] Estimated relative clock rate error TIERABSO= 1. / [s] Estimated absolute clock offset error TSTART = 230909230.5945 / Start time DATE-OBS= '2008-04-26T13:23:21' TSTOP = 230909476.61098 / Stop time DATE-END= '2008-04-26T13:31:15' CLOCKAPP= F / If clock correction are applied (F/T) ORIGIN = 'GSFC ' / Source of FITS file CREATOR = 'TDRSS2FITS V3.22' / Program that created this FITS file TLM2FITS= 'V3.22 ' / Telemetry converter version number DATE = '2008-12-17T22:26:48' / file creation date (YYYY-MM-DDThh:mm:ss UT) UTCFINIT= -2.74604000000000 / [s] UTCF at TSTART CHECKSUM= 'ghjAghj8ghjAghj7' / HDU checksum updated 2008-12-18T01:21:39 DATASUM = ' 0' / data unit checksum updated 2008-12-17T22:26:48 OBJECT = 'GRB080426' PROCVER = '3.12.4 ' / Processing script version SOFTVER = 'Hea_19Sep2007_V6.3.2_Swift_Rel2.7.2(Bld21.2)_19Sep2007' / HEASOFT andCALDBVER= 'b20070924_u20071106_x20071101_m20071023' / CALDB index versions used ATTFLAG = '100 ' / Orgin of attitude information 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 = '00310219000' / Observation ID TARG_ID = '310219 ' / Target ID SEG_NUM = '0 ' / Segment number CREATOR = 'TDRSS2FITS V3.22' / Program that created this FITS file ORIGIN = 'GSFC ' / Source of FITS file TLM2FITS= 'V3.22 ' / 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-8 / [s/s] relative errors expressed as rate TIERABSO= 1.0 / [s] timing precision in seconds CLOCKAPP= F / If clock correction are applied (F/T) TIMEREF = 'LOCAL ' / Time reference (barycenter/local) TASSIGN = 'SATELLITE' / Time assigned by clock DATE = '2008-12-17T22:26:48' / file creation date (YYYY-MM-DDThh:mm:ss UT) TSTART = 230909230.5945 / Start time DATE-OBS= '2008-04-26T13:27:09' TSTOP = 230909476.61098 / Stop time DATE-END= '2008-04-26T13:31:15' UTCFINIT= -2.74604000000000 / [s] 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 = 310219 / Trigger Number XRA_OBJ = 26.5607814788818 / [deg] XRT RA location GRB or Object XDEC_OBJ= 69.5164108276367 / [deg] XRT DEC location GRb or Object TERMMODE= 0 / XRT termination mode TELAPSE = 246.016479998827 / TSTOP - TSTART ONTIME = 244.140426635742 / Time on target LIVETIME= 244.140426635742 / Ontime multiplied by DEADC EXPOSURE= 244.140426635742 / Total exposure, with all known correction DEADC = 1. / dead time correction UTCCTIME= -2.74604 / [s] UTC Correction TIME UTCCSEC = -3 / UTC Correction Seconds UTCCSUBS= 12698 / [2*10**(-5) s] UTC Correction SUBSeconds PKTTIME = 230909476.64864 / [s] ccsds PacKeT TIME=PKTSEC+PKTSUBS*2e-5 PKTSEC = 230909476 / ccsds PacKeT SEConds PKTSUBS = 32432 / [2*10**(-5) s] ccsds PacKeT SUBSeconds APID = 1253 / Application Process Identifier CHECKSUM= '9pOhAmNZ2mNf9mNZ' / HDU checksum updated 2008-12-18T01:21:39 DATASUM = '3195352595' / data unit checksum updated 2008-12-17T22:26:48 PROCVER = '3.12.4 ' / Processing script version SOFTVER = 'Hea_19Sep2007_V6.3.2_Swift_Rel2.7.2(Bld21.2)_19Sep2007' / HEASOFT andCALDBVER= 'b20070924_u20071106_x20071101_m20071023' / CALDB index versions used ATTFLAG = '100 ' / Orgin of attitude information END A«†Ê]0bNA«†Ê^¼,A«†Ê_ Ri@Mú A«†Êa,ß&@([ àA«†ÊcOkãA«†ÊlÜx@è& A«†Êqà>ê@·U€A«†Êvãû½@·U€A«†Ê{ç»0@½KàA«†Ê€ëz¢@$ã A«†Ê…ï7v@U´@A«†ÊŠòöè@$ã A«†Êö³¼@·U€A«†Ê”ús.@Œ{@A«†Ê™þ2 @·U€A«†ÊŸït@Œ{@A«†Ê¤¬G@U´@A«†Ê© i@·U€A«†Ê® +,@$ã A«†Ê³çÿ@·U€A«†Ê¸¤Ó@U´@A«†Ê½dE@½KàA«†ÊÂ#¸@è& A«†ÊÇà‹@·U€A«†ÊÌ#Ÿý@è& A«†ÊÑ'\Ñ@$ã A«†ÊÖ+¤@·U€A«†ÊÛ.Û¶@U´@A«†Êà2˜‰@½KàA«†Êå6U\@è& A«†Êê:Ï@ †„àA«†Êï=ÔA@Œ{@A«†ÊôA‘@$ã A«†ÊùEP‡@Œ{@A«†ÊþI Z@Œ{@A«†ËLÊ.@Œ{@A«†ËPŒ?@è& A«†Ë TI@Œ{@A«†ËXæ@è& A«†Ë[ÅX@·U€A«†Ë_„Ë@è& A«†Ë!cAž@U´@A«†Ë&fþr@·U€A«†Ë+j½ä@è& A«†Ë0nz·@Œ{@A«†Ë5r:*@Œ{@A«†Ë:uùœ@ †„àA«†Ë?y¶p@ †„àA«†ËD}sC@Œ{@A«†ËI5T@·U€A«†ËN„ò(@U´@A«†ËSˆ®û@ †„àA«†ËXŒkÏ@·U€A«†Ë]+A@$ã A«†Ëb“ê³@è& A«†Ëg—ª&@Œ{@A«†Ël›fù@#$ã A«†ËqŸ#Í@è& A«†Ëv¢ã?@$ã A«†Ë{¦¢±@$ã A«†Ë€ª_…@ †„àA«†Ë…®X@è& A«†ËŠ±ÛË@ †„àA«†Ëµ›=@$ã A«†Ë”¹X@·U€A«†Ë™½ƒ@$ã A«†ËžÀÔV@Œ{@A«†Ë£Ä“É@$ã A«†Ë¨ÈPœ@è& A«†ËÌ@·U€A«†Ë²ÏÌâ@·U€A«†Ë·Ó‰µ@U´@A«†Ë¼×I(@½KàA«†ËÁÛš@·U€A«†ËÆÞÅm@$ã A«†ËËâ‚A@$ã A«†ËÐæDR@è& A«†ËÕê&@Œ{@A«†ËÚí½ù@$ã A«†Ëßñ}k@è& A«†Ëäõ:?@Œ{@A«†Ëéøù±@ †„àA«†Ëîü¶…@è& A«†ËôsX@è& A«†Ëù2Ê@U´@A«†Ëþò=@ †„àA«†Ì¯@U´@A«†Ìnƒ@è& A«†Ì +V@ †„àA«†Ìè)@ †„àA«†Ìª;@Œ{@A«†Ìg@½KàA«†Ì!"#â@·U€A«†Ì&%àµ@ †„àA«†Ì+) '@†„àA«†Ì0-_š@·U€A«†Ì51m@ †„àA«†Ì:4Ù@@$ã A«†Ì?8˜³@ †„àA«†ÌD