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 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 / 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 CLOCKAPP= F / If clock correction are applied (F/T) TIMEREF = 'LOCAL ' / Time reference (barycenter/local) TASSIGN = 'SATELLITE' / Time assigned by clock DATE = '2008-12-17T22:26:49' / file creation date (YYYY-MM-DDThh:mm:ss UT) TSTART = 230909235.919183 / Start time DATE-OBS= '2008-04-26T13:23:21' TSTOP = 230910978.489292 / Stop time DATE-END= '2008-04-26T13:56:17' CHECKSUM= '3pha6ngW3nga3ngW' / HDU checksum updated 2008-12-18T01:24:56 DATASUM = ' 0' / data unit checksum updated 2008-12-17T22:26:49 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 UTCFINIT= -2.74604000000000 / [s] UTCF at TSTART END XTENSION= 'BINTABLE' / binary table extension BITPIX = 8 / 8-bit bytes NAXIS = 2 / 2-dimensional binary table NAXIS1 = 31 / width of table in bytes NAXIS2 = 360 / number of rows in table PCOUNT = 0 / size of special data area GCOUNT = 1 / one data group (required keyword) TFIELDS = 11 / number of fields in each row TTYPE1 = 'TIME ' / Time of events TFORM1 = '1D ' / data format of field: 8-byte DOUBLE TUNIT1 = 's ' / physical unit of field TTYPE2 = 'CCDFrame' / CCD FRAME number TFORM2 = '1J ' / data format of field: 4-byte INTEGER TTYPE3 = 'X ' / Event X position Sky coordinates TFORM3 = '1I ' / data format of field: 2-byte INTEGER TUNIT3 = 'pixel ' / physical unit of field TTYPE4 = 'Y ' / Event Y position Sky coordinates TFORM4 = '1I ' / data format of field: 2-byte INTEGER TUNIT4 = 'pixel ' / physical unit of field TTYPE5 = 'RAWX ' / Event X position RAW coordinates TFORM5 = '1I ' / data format of field: 2-byte INTEGER TUNIT5 = 'pixel ' / physical unit of field TTYPE6 = 'RAWY ' / Event Y position RAW coordinates TFORM6 = '1I ' / data format of field: 2-byte INTEGER TUNIT6 = 'pixel ' / physical unit of field TTYPE7 = 'DETX ' / Event X position DET coordinates TFORM7 = '1I ' / data format of field: 2-byte INTEGER TUNIT7 = 'pixel ' / physical unit of field TTYPE8 = 'DETY ' / Event Y position DET coordinates TFORM8 = '1I ' / data format of field: 2-byte INTEGER TUNIT8 = 'pixel ' / physical unit of field TTYPE9 = 'Amp ' / Amplifier node used for read out TFORM9 = '1B ' / data format of field: BYTE TTYPE10 = 'PHA ' / Pulse Height Analyzer after event recognition TFORM10 = '1J ' / data format of field: 4-byte INTEGER TUNIT10 = 'chan ' / physical unit of field TTYPE11 = 'STATUS ' / Event Quality Flag TFORM11 = '16X ' / data format of field: BIT EXTNAME = 'EVENTS ' / name of this binary table extension TLMIN3 = 1 / Minimum value for X column TLMAX3 = 1000 / Maximum value for X column TLMIN4 = 1 / Minimum value for Y column TLMAX4 = 1000 / Maximum value for Y column TLMIN5 = 0 / minimum legal value in this column TLMAX5 = 599 / maximum legal value in this column TLMIN6 = 0 / minimum legal value in this column TLMAX6 = 599 / maximum legal value in this column TLMIN7 = 1 / Minimum value for DETX column TLMAX7 = 600 / Maximum value for DETX column TLMIN8 = 1 / Minimum value for DETY column TLMAX8 = 600 / Maximum value for DETY column TLMIN10 = 0 / minimum legal value in this column TLMAX10 = 4095 / maximum legal value in this column TCTYP5 = 'RAWX ' / WCS axis type TCRVL5 = 2.9950000000000E+02 / WCS reference value TCDLT5 = 1 / WCS coordinate increment TCRPX5 = 3.0050000000000E+02 / WCS Reference point TCTYP6 = 'RAWY ' / WCS axis type TCRVL6 = 2.9950000000000E+02 / WCS reference value TCDLT6 = 1 / WCS coordinate increment TCRPX6 = 3.0050000000000E+02 / WCS Reference point COMMENT COMMENT NOTE : These files are telemetered via TDRSS. To save COMMENT telemetry only isolated pixels and non empty frames COMMENT are sent-down. COMMENT Therefore GTIs within this file may not be correct COMMENT because the valid exposures associated with the empty COMMENT frames are not included. This file should not be used COMMENT to evaluate count rates. COMMENT MESGNAME= 'XRT_PCMODE' / Name of the message MTYPE1 = 'SKY ' / DM keyword: Descriptor name MFORM1 = 'X, Y ' / [pixel] MTYPE2 = 'DET ' / DM keyword: Descriptor name MFORM2 = 'DETX, DETY' / [pixel] MTYPE3 = 'RAW ' / DM keyword: Descriptor name MFORM3 = 'RAWX, RAWY' / [pixel] 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 = 5.1910000000000E+04 / Reference MJD Integer part MJDREFF = 7.4287037000000E-04 / 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 = '2008-12-17T22:26:49' / file creation date (YYYY-MM-DDThh:mm:ss UT) TSTART = 2.3090923591918E+08 / Start time DATE-OBS= '2008-04-26T13:27:14' TSTOP = 2.3091097848929E+08 / Stop time DATE-END= '2008-04-26T13:56:17' TELAPSE = 1.7425701087415E+03 / TSTOP - TSTART ONTIME = 6.8175562456255E+02 / Sum of GTIs LIVETIME= 6.8175562456255E+02 / Ontime multiplied by DEADC EXPOSURE= 6.8175562456255E+02 / Exposure with all corrections DEADC = 1.0000000000000E+00 / dead time correction TIMEDEL = 2.5073000000000E+00 / Data time resolution HDUCLASS= 'OGIP ' / Format conforms to OGIP standards HDUCLAS1= 'EVENTS ' / Event extension DATAMODE= 'PHOTON ' / Instrument operating mode OBS_MODE= 'POINTING' / default XRTPHA = T / default WHALFWD = 250 / Window Half Width WHALFHT = 250 / Window Half Height CCDEXPOS= 2.5073000000000E+00 / CCD Exposure used for rates APID = 1255 / Application Process Identifier RA_PNT = 2.6562992095947E+01 / [deg] Nominal RA DEC_PNT = 6.9515213012695E+01 / [deg] Nominal Dec PA_PNT = 1.7087350000000E+02 / [deg] Nominal Roll CHECKSUM= 'CpgDDnd9CndACnd9' / HDU checksum updated 2008-12-18T01:24:56 DATASUM = '592058237' / data unit checksum updated 2008-12-17T22:48:39 RA_NOM = 2.6562990000000E+01 / R. A. of nominal aspect point DEC_NOM = 6.9515210000000E+01 / Dec. of nominal aspect point ABERRAT = F / Has aberration been corrected for in sky coordsFOLOWSUN= F / Has the Sun position been recalculated for eachTCRPX7 = 3.0050000000000E+02 / DETX image reference pixel TCRVL7 = 0.0000000000000E+00 / DETX image reference pixel coordinate (mm) TCDLT7 = 4.0000000000000E-02 / DETX image scale (mm/pixel) TCTYP7 = 'DETX ' / DETX coordinate type TCUNI7 = 'mm ' / DETX units TCRPX8 = 3.0050000000000E+02 / DETY image reference pixel TCRVL8 = 0.0000000000000E+00 / DETY image reference pixel coordinate (mm) TCDLT8 = 4.0000000000000E-02 / DETY image scale (mm/pixel) TCTYP8 = 'DETY ' / DETY coordinate type TCUNI8 = 'mm ' / DETY units TCRPX3 = 5.0050000000000E+02 / X image reference pixel TCRVL3 = 2.6562990000000E+01 / X image reference pixel coordinate (deg) TCDLT3 = -6.5480890000000E-04 / X image scale (deg/pixel) TCTYP3 = 'RA---TAN' / X coordinate type TCUNI3 = 'deg ' / X units TNULL3 = 0 TCRPX4 = 5.0050000000000E+02 / Y image reference pixel TCRVL4 = 6.9515210000000E+01 / Y image reference pixel coordinate (deg) TCDLT4 = 6.5480890000000E-04 / Y image scale (deg/pixel) TCTYP4 = 'DEC--TAN' / Y coordinate type TCUNI4 = 'deg ' / Y units TNULL4 = 0 HISTORY The DETX DETY X Y columns were updated by coordinator 0.1 on HISTORY 2008-12-17T HISTORY 22:48:39 UTC using teldef file HISTORY /aps/calibration/caldb20071108/data/swift HISTORY /xrt/bcf/teldef/swx20070911v001.teldef and attitude file HISTORY sw00310219000ms HISTORY xpc_uf.evt. HISTORY HISTORY START PARAMETER list for coordinator_0.1 at 2008-12-17T22:48:39 HISTORY HISTORY P1 eventfile = 27130_xpc_uf.evt HISTORY P2 eventext = EVENTS HISTORY P3 timecol = TIME HISTORY P4 skyxnull = -1 HISTORY P5 skyynull = -1 HISTORY P6 attfile = sw00310219000msxpc_uf.evt HISTORY P7 teldef = HISTORY /aps/calibration/caldb20071108/data/swift/xrt/bcf/teldef/swx HISTORY P7 20070911v001.teldef HISTORY P8 aberration = no HISTORY P9 follow_sun = no HISTORY P10 ra = 26.5629920959473 HISTORY P11 dec = 69.5152130126953 HISTORY P12 randomize = yes HISTORY P13 seed = -1956 HISTORY P14 timemargin = 32 HISTORY P15 interpolation = CONSTANT HISTORY P16 history = yes HISTORY P17 chatter = 1 HISTORY P18 mode = ql HISTORY END PARAMETER list for coordinator_0.1 HISTORY XRTDETXY= T / Are DETX/Y coordinates computed (T/F)? XRTSKYXY= T / Are X/Y coordinates computed (T/F)? ATTFLAG = '100 ' / Orgin of attitude information HISTORY File modified by xrtflagpix_0.7.3 (swxrtdas_14Sep07_v2.2.1) at HISTORY 2008-12-17T22:48:39 HISTORY Overwritten STATUS column. HISTORY Used following file(s) to get bad pixels: HISTORY /aps/calibration/caldb20071108/data/swift/xrt/bcf/badpix/swxbadpix2007 HISTORY 1030v001.fits CALDB bad pixels file HISTORY /aps/calibration/caldb20071108/data/swift/xrt/bcf/badpix/swxonboardbp2 HISTORY 0071030v001.fits on-board bad pixels table COMMENT Events STATUS flags COMMENT b0000000000000000 Good event COMMENT b0000000000000001 Event falls in bad pixel from CALDB COMMENT b0000000000000010 Event falls in bad pixel from on board Bad Pixels COMMENT Tabl COMMENT COMMENT b0000000000000100 Event falls in burned spot region COMMENT b0000000000001000 Event falls in hot bad pixel COMMENT b0000000000010000 Event falls in user bad pixel COMMENT b0000000000100000 Event falls in flickering bad pixel COMMENT b0000000001000000 Event falls in telemetred bad pixel COMMENT b0000000010000000 Event has a neighbor bad from hot and flickering COMMENT pixel COMMENT s list COMMENT b0000000100000000 Column COMMENT b0000001000000000 Event has PHA[1] < Event threshold COMMENT b0000010000000000 Event has a neighbor bad from bad pixels list COMMENT b0000100000000000 Bad event COMMENT b0001000000000000 Event from calibration source 1 COMMENT b0010000000000000 Event from calibration source 2 COMMENT b0100000000000000 Event from calibration source 3 COMMENT b1000000000000000 Event from calibration source 4 XRTFLAG = T / Are events flagged (T/F)? XRTMAXTP= 0.0000000000000E+00 / Temperature threshold to flag burned spot HISTORY HISTORY START PARAMETER list for xrtflagpix_0.7.3 at 2008-12-17T22:48:39 HISTORY HISTORY P1 infile = 27130_xpc_uf.evt HISTORY P2 outfile = sw00310219000msxpc_cl.evt HISTORY P3 hdfile = 27130_xpc_uf.evt HISTORY P4 bpfile = CALDB HISTORY P5 srcfile = CALDB HISTORY P6 userbpfile = NONE HISTORY P7 bptable = CALDB HISTORY P8 thrfile = CALDB HISTORY P9 phas1thr = 80 HISTORY P10 maxtemp = 0 HISTORY P11 outbpfile = NONE HISTORY P12 overstatus = yes HISTORY P13 chatter = 3 HISTORY P14 clobber = no HISTORY P15 history = yes HISTORY P16 mode = ql HISTORY END PARAMETER list for xrtflagpix_0.7.3 HISTORY HISTORY File modified by xrthotpix_0.3.2 (swxrtdas_14Sep07_v2.2.1) at HISTORY 2008-12-17T22:48:39 HISTORY XRTHNFLG= F / Flag events with neighbour bad (T/F)? HISTORY HISTORY START PARAMETER list for xrthotpix_0.3.2 at 2008-12-17T22:48:39 HISTORY HISTORY P1 infile = sw00310219000msxpc_cl.evt HISTORY P2 outfile = NONE HISTORY P3 outbpfile = NONE HISTORY P4 overstatus = yes HISTORY P5 usegoodevt = yes HISTORY P6 gradeiterate = no HISTORY P7 cellsize = 3 HISTORY P8 impfac = 1000 HISTORY P9 logpos = -5.3 HISTORY P10 bthresh = 3 HISTORY P11 phamin = 0 HISTORY P12 phamax = 4095 HISTORY P13 cleanflick = yes HISTORY P14 iterate = yes HISTORY P15 hotneigh = no HISTORY P16 chatter = 3 HISTORY P17 clobber = no HISTORY P18 history = yes HISTORY P19 mode = ql HISTORY END PARAMETER list for xrthotpix_0.3.2 HISTORY HISTORY TASK: FSELECT on FILENAME: sw00310219000msxpc_cl.evt HISTORY fselect4.4 at 2008-12-17T22:48:39 HISTORY Expression: STATUS==b0 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 UTCFINIT= -2.74604000000000 / [s] UTCF at TSTART END Ag֟4'ilmAg֟4'igh CAg֟4'iwx6AlaG'jefsAqy'k0g1h Avݍ'ljkzA{'m^_OAʀW2'nklAʊ'pghAʊ'p^_rAʏ'qhiAʙ'sklAʮ ]'w_`Aʸ'y5`aAʸ'yijAG'{cd7A['|TU MA!.'}mnA!.'}gA('hiA,'ghUA47,'ijzA47,'hi A7'noWA;'no6A?r'klfAC/' noAC/'mnfAF'hi@AJ'klkAJ'hiANkp'opA R%'u'v(AU'noAY('klHA&dA'-`aA&dA'lmYA+h'ijA0lY'ghRAD{W'noAD{W'jkAI'hi$AS'fgAS'klAXM'hi5AXM'\]A] o'!{|Ab̃' o p AgV'^_Av'mnAˀ<' jkAˀ<'Z[A˅('ijSAˊ'#ef2Aˊ'fgIAˊ'mnAˏw'KL?A˔9'^_RA˔9'ijA˔9'qrA˙'LRSBAˣpX'jk~A˲ͬ'%pq&A˲ͬ'jkA'!0A'jk|A'jkAܡ'efAf'!OPAf'A#'ij{Aݵ'ijQAݵ'jkA'jk$A'no@A@'lm"A' opA'klA'mn}A;'ij A 'abA 'fgA M'ij A M'deA 'noAk'hiA! q'^_A! q'noA&#…'ghUA&#…'ij_A&#…'hiAD:7V'eflAI='Z[AI='efVANA'hiASEpo'hiASEpo'hi#AXI-@'abAXI-@'ghA]LT'XY AbP''pq AlX+ 'efAq['hiTAv_'lmAv_'Av_'ijA{c^'ij A̞}'ijẠO'#ijẠO'klĄ'[\ $Ą'kl>Ao'ghAƛ'jk0Aƛ'ijAƛ'KLiA˟A'hi+Aզ'ij1A߮9'7ijbA'abA鵸'jkxAuY'fgKA/'lmA>'%ij~Aı'ijA 'ghA 'jkmA 'm*n+A>W'noAH΍' jk~AN'"ij2AN'!\]mAN'jkASP'mnAX 'ijAX 'jkAX 'Y|A] (jk2AgF( ~`Alr(deAlr(jkAq(jkAq(hiNAͅ)0(ijA͊-zD( ijA͊-zD( mn.A͏17( ef9A͏17( ijnA͏17( opA͏17( S T A͙8( efA͞/O(-jkqAC(.opAa^R(4ijEAuV(8lmA(:ijA΄蒘(;tuA΄蒘(;ijAΉL(<ef3AΘ$(?ijAη V(Ehi A9(HijA(I@23A(IjkrA (J)hi\A (Jgh>A$l(Klm 7A/A(NklA:(QjkIAI(UghpA MX(VlmAQY+(WbchAXq(YjkA%`Q([fgA4k(^VWA>s(`jkA>s(`ghiACvH(aijAR(dmnAW(ejkAf(hhijAka(ide9Apq(jjkAz(lijAτg(nijAϓx(qV8AϘ`L(rdeAϝ~(sghAϢ1(tjkAϢ1(t3/0AϬX(vi j Aϱ(wklAQc(z no=A6({klA6({hiA6({mn AI(~gh>AI(~klIA!(ijA3&(kl]A3&(ijA:(hi[A q()lm>A q(hieA q(uv#AX(cd-A j (klA*"(hiNA/&(lmA4*_(jkA9.j(\] AC5p(kl>AaL (ijUApWF(klAu[.(;  AЄf?(deAЎm(hiAГqx(jkAГqx(E"F#AИu8(jkAИu8(hiAТ|(0|}Aбr(lm,Aбr(~AжE(jk[A&(lm&AϞ]($fgA٥(X, Aީ(!WXAN(ghA(jkA(CDA37(mnHA37(lmHA8(~EA=e(LEF AQ(#_`AQ(hiAa i(B}~2Ak_P(jkAu(efAщ(р(efAѶJ (klAl-U(} ~?Al-U(jkjAs<(~QR Awi(ijAa(efA o(opA(T0AZ'(kl$AZ'(jkAZ'(nosA8Y(ijeA8Y(op?AG(12PAVC(#xyGAezD)hiJAj7)lmAҍk[) ijAҡc) ijBAҬݍ)ij,Aұ^)de6Aһ E)fgAһ E) : !A).bc.A)fgA.0)ij.A:)3NO^A=)fgzAE9`)!ijA Ht)"ijALG)#lmAAW)&lmA$[)'lm5AGu).ijAQ}^)0lmAV)1\]A`u)3klAӦ)AmnAӫ)B+abAӫ)BijAӵ9w)DghA5)NklA5)NklA5)NtuAa)Ogh(A)QhiQA)QopA L)VklAR )W`a~A3%P)]jk.A=-C7)_mnAL8~)bSQTRAQ<;)cAoR)ijk6AoR)i`aAtVp)jmn\Aԃa~)mdeAԍi%e)ojkAԗp )qklzAԦ{c)tijA)jkACL)ghACL)9[:\A)[\ArO)o p Aհ)efqA(,)jknA7cf)klA<%z)ijAe )noAՒ+|)hiAտMrd)ijsAQ4x)ijAc)bc&AzaG)pqA#R_)lm'A2)wxAU)kldAs4)hiVAև-)ijA֖h)jk!Aְ0)#fgA"X)pqHAH9u)efAO)jkLAO)vwAAAmq)jkAdV*!mn(AdV*hi)A}T*mn]Aב* jkAזM* klA׹ǁ*lmxXTENSION= 'BINTABLE' / binary table extension BITPIX = 8 / 8-bit bytes NAXIS = 2 / 2-dimensional binary table NAXIS1 = 16 / width of table in bytes NAXIS2 = 147 / number of rows in table PCOUNT = 0 / size of special data area GCOUNT = 1 / one data group (required keyword) TFIELDS = 2 / number of fields in each row TTYPE1 = 'START ' / Interval START time TFORM1 = '1D ' / data format of field: 8-byte DOUBLE TUNIT1 = 's ' / physical unit of field TTYPE2 = 'STOP ' / Interval STOP time TFORM2 = '1D ' / data format of field: 8-byte DOUBLE TUNIT2 = 's ' / physical unit of field EXTNAME = 'GTI ' / name of this binary table extension COMMENT COMMENT NOTE : These files are telemetered via TDRSS. To save COMMENT telemetry only isolated pixels and non empty frames COMMENT are sent-down. COMMENT Therefore GTIs within this file may not be correct COMMENT because the valid exposures associated with the empty COMMENT frames are not included. This file should not be used COMMENT to evaluate count rates. COMMENT MESGNAME= 'XRT_PCMODE' / Name of the message HDUCLASS= 'OGIP ' / Format conforms to OGIP standards HDUCLAS1= 'GTI ' / Good time interval HDUCLAS2= 'STANDARD' / Standard GTI 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 = '2008-12-17T22:26:49' / file creation date (YYYY-MM-DDThh:mm:ss UT) TSTART = 230909235.919183 DATE-OBS= '2008-04-26T13:27:14' TSTOP = 230910978.489292 DATE-END= '2008-04-26T13:56:17' TELAPSE = 1742.57010874152 / TSTOP - TSTART ONTIME = 683.020223081112 LIVETIME= 681.755624562547 / Ontime multiplied by DEADC EXPOSURE= 681.755624562547 / Exposure with all corrections DEADC = 1. / dead time correction CHECKSUM= 'njlMniiKniiKniiK' / HDU checksum updated 2008-12-18T01:24:56 DATASUM = '3530288899' / data unit checksum updated 2008-12-17T22:26:51 PROCVER = '3.12.4 ' / Processing script version ATTFLAG = '100 ' / Orgin of attitude information UTCFINIT= -2.74604000000000 / [s] UTCF at TSTART END Ag֟4AʅAʊAʔ/}AʙAʞAʮ ]Aʳ OAʸAʽ AGA !A(A+TA47,AXAA&dAA5jyAD{WAN}xASAl#IAvA{_Aˀ<A˞AˣpXA˨ A˲ͬA˷FAA9AA/A;AA AxAkA#^A! qA+"\wA:2A?1UAD:7VAgOFAlX+ ÀaxA̞}A̭AoAНݦAզAڥYA߮9AKA A%|A>WAC{AH΍Ab cAgFAv\7Aͅ)0A͔/ A͙8Aͣ; AͨCvAͭBiAͷO(.AQ~AZ\AXAiW4AkAtAvAΤA~hA@A*A4A9OA>/OAHAa^RAfAuVAzqAAΎ]AΘ$AΝ%Aη VAμ IA9A# zA/AA.E4A:A9AIAOAXqA WodA%`QA*^A4kA9j$A>sAHu]ARA\VfAfAu AzA AτgAωAϓxAϧy#AϬXA϶ǯAQcA֨)AIAA!AVA3&A-A qA sAXA%A*"A>,]AC5pAH43AaL AfJApWFA]]4AЄf?AЉdzAЎmAНsAТ|AЧ{KAбrAлD8A&Aő~AϞ]AԜA٥A2ANAAA͠ A37ABKXAQAVCAa iAf |Ak_PApCAuAzuAщ(рAю'nAѶJ AѻIAl-UAjAs4'eB4'efehPjd>A[A\Mu6 s'}AzBC*ˀ?'ehekPBdKA!.A !t s'Az_BC*݀?L4'emepPGdUA(A't s'AzDBC*׀?L4'epMerPdEA,A+Tt s'AzBC*?'eu(ewxP(dA47,A2u6 s'AzBC*׀?L4'ew>ez>PdKA7A6t s'A{ BC* ?4'eze|TPd[A;A:Mdum s'A{BC*?'e|ePdQA?rA> t s'A{BC*뀀?'eލe.PdAC/AAɪv& s'A{)BC*뀀?'eePdNAFAE}t s'A{BC*?'ee P)dMAJAIHt s'A{]BC*?L4'eύePdANkpA Mcu? s'A|qBC*?'eePۏdA R%AP5u6 s'A|BtC*?'eePdAUATt s'A}B|C*#?'epePPdAY(AXAvu s'A|B\C**?4'e `e`PMdA&dAA+cz4u6 s'A}OB\C*5?'e%e uPDdA+hA0g7t s'A}B\C*=?'e ;e<PYdA0lYA5jyum s'A|VB`C*#?L4'eeP.dAD{WAIyt s'A}SBSC*>4'eePdAIAN}xv& s'A}BIC*6?'eePdASAX(u6 s'A}BOC*3?'eePdAXMA]u? s'A}BTC*@?L4'emePkdA] oAbu6 s'A}BVC*@>4'eePadAb̃Agfvu? s'A}BXC*9?'eHeP'd/AgVAl#Iw! s'A}FBKC*4?L4'e!9e9P}d3AvA{_u? s'A~BGC*K?L4'e$ePdAˀ<A˅اrh s'A}BMC*3?L4'eٍe$)P@dA˅(Aˊv& s'A}`BUC*4?4'e&ePdAˊAˏWv& s'A}:BMC*7>4'eƴe'P"dAˏwA˔_um s'A}BQC*F?'e)ʍeP dA˔9A˙um s'A}BZC*N?L4'eɏe)PdA˙A˞v& s'A{BLC*?L4'eje,PdAˣpXA˨ vu s'A|BXC*?'e2ZeZPdA˲ͬA˷Fv& s'A}8BTC*&?'ee5KPdAAׁvu s'A}BYC*&>4'e8eP dAܡA>u? s'A|xB`C* ?L4'e׍e8'PMdAfAv& s'A}BbC*+>4'e:ePdA#Avum s'A}BVC*@?'eڱe;PRdAݵAzHvų s'A}B^C*>>4'e=ǍePHdAA9um s'A}BdC*/>4'e@eݢPdAAv& s'A}B]C*/>4'ege@PSdA@Arum s'A|B_C*?'e,e}PdAA/u6 s'A|qBjC*>4'efWPEdA;AweR s'A|BRC*?L4'ff3PUdA A*w! s'A}zB[C*&?'ff PfdA MA vu s'A~BLC*A?L4'f f PˏdA Axum s'A~B4C*K>4'ffPdAkA#^v& s'A~B>C*??L4'fsfPdA! qA&w! s'A~B@C*C?'ffPdA&#…A+"\wvu s'A|(BhC*!>4'f?f"?PdHA:2A?1Uu? s'A}BVC*?>4'f$f'PxdAD:7VAI8Iv& s'A|BbC*8?L4'f'ߍf)0PdAI=AN<vu s'A|BlC*'>4'f)f,PdANAAS@Mum s'A|NBZC*?L4'f,f. 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row TTYPE1 = 'TIME ' / Spacecraft clock time TFORM1 = '1D ' / data format of field: 8-byte DOUBLE TUNIT1 = 's ' / physical unit of field TTYPE2 = 'QPARAM ' / Quaternion of pointing TFORM2 = '4D ' / data format of field: 8-byte DOUBLE TTYPE3 = 'POINTING' / RA, Dec, Roll from telemetry TFORM3 = '3D ' / data format of field: 8-byte DOUBLE TUNIT3 = 'deg ' / physical unit of field TTYPE4 = 'SOURCE ' / 2 = XRT LDPs TFORM4 = '1B ' / data format of field: BYTE EXTNAME = 'ATTITUDE' / name of this binary table extension HDUCLASS= 'OGIP ' / Format conforms to OGIP standards HDUCLAS1= 'ARRAY ' / Time ordered data HDUCLAS2= 'TOTAL ' / Housekeeping 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 = '2008-12-17T22:26:49' / file creation date (YYYY-MM-DDThh:mm:ss UT) TSTART = 230909235.919183 / Start time DATE-OBS= '2008-04-26T13:27:14' TSTOP = 230910978.489292 / Stop time DATE-END= '2008-04-26T13:56:17' ALGN_NAM= 'swalign20041115v012.fits' TELAPSE = 1742.57010874152 / TSTOP - TSTART CHECKSUM= 'AlADDkA9AkACAkA9' / HDU checksum updated 2008-12-18T01:24:56 DATASUM = '3456852222' / data unit checksum updated 2008-12-17T22:26:51 PROCVER = '3.12.4 ' / Processing script version SOFTVER = 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