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 HDUCLASS= 'OGIP    '           / Format conforms to OGIP standards              HDUCLAS1= 'ARRAY   '           / Time order data                                HDUCLAS2= 'TOTAL   '           / Housekeeping                                   TIMESYS = 'TT      '           / Time system                                    MJDREFI =                51910 / MJD reference day                              MJDREFF =        0.00074287037 / MJD reference (fraction of day)                TIMEREF = 'LOCAL   '           / Time reference (barycenter/local)              TASSIGN = 'SATELLITE'          / Time assigned by clock                         TIMEUNIT= 's       '           / Time unit for timimg header keywords           TIERRELA=               1.0E-8 / [s/s] relative errors expressed as rate        TIERABSO=                  1.0 / [s] timing  precision  in seconds              TSTART  = 4.676102214005800E+08 / Time of first attitude record                 TSTOP   = 4.676127160006000E+08 / Time of last attitude record                  DATE-OBS= '2015-10-27T03:43:37'                                                 DATE-END= '2015-10-27T04:25:12'                                                 CLOCKAPP=                    F / If clock correction are applied (F/T)          TELAPSE =                   0. / TSTOP - TSTART                                 TELESCOP= 'SWIFT   '           / Telescope (mission) name                       OBS_ID  = '00661775000'        / Observation ID                                 TARG_ID =               661775 / Target ID                                      SEG_NUM =                    0 / Segment number                                 RA_PNT  =     272.444613480852 / [deg] RA pointing                              DEC_PNT =     61.3719790561863 / [deg] Dec pointing                             PA_PNT  =     238.909630482004 / [deg] Position angle (roll)                    EQUINOX =                2000. / Equinox for pointing RA/Dec                    RADECSYS= 'FK5     '           / Coordinates System                             OBJECT  = 'GRB151027a'         / Object name                                    RA_OBJ  =             272.4886 / [deg] R.A. Object                              DEC_OBJ =             61.35152 / [deg] Dec Object                               ORIGIN  = 'GSFC    '           / Source of FITS file                            PROCVER = '3.17.01 '           / Processing script version                      SEQPNUM =                    4 / Number of times the dataset processed          CREATOR = 'unpacket'           / Program that created this FITS file            HISTORY TASK: FMEMSORT on FILENAME: sw00661775000sat.fits[2]                    HISTORY fmemsort4.1 at 2015-11-06T05:46:00                                      DATE    = '2015-11-06T05:46:00'                                                 ATTFLAG = '100     '           / Attitude origin: 100=sat/spacecraft            SOFTVER = 'Hea_27Jul2015_V6.17_Swift_Rel4.5(Bld34)_27Jul2015_SDCpatch_0'        CALDBVER= 'b20090130_u20111031_x20150721_m20150911' / CALDB index versions used TRIGTIME=        467611119.488 / [s] MET TRIGger Time for Automatic Target      END                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             XTENSION= 'BINTABLE'           / binary table extension                         BITPIX  =                    8 / 8-bit bytes                                    NAXIS   =                    2 / 2-dimensional binary table                     NAXIS1  =                   16 / width of table in bytes                        NAXIS2  =                    1 / 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   '           / label for field   1                            TFORM1  = '1D      '           / data format of field: 8-byte DOUBLE            TUNIT1  = 'sec     '           / physical unit of field                         TTYPE2  = 'STOP    '           / label for field   2                            TFORM2  = '1D      '           / data format of field: 8-byte DOUBLE            TUNIT2  = 'sec     '           / physical unit of field                         EXTNAME = 'STDGTI  '           / name of this binary table extension            HDUCLASS= 'OGIP    '           / format conforms to OGIP/GSFC conventions       HDUCLAS1= 'GTI     '           / Extension contains Good Time Intervals         HDUCLAS2= 'STANDARD'           / Extension contains Good Time Intervals         TIMESYS = 'TT      '           / Time system                                    MJDREFI =                51910 / MJD reference day                              MJDREFF =        0.00074287037 / MJD reference (fraction of day)                TIMEREF = 'LOCAL   '           / Time reference (barycenter/local)              TASSIGN = 'SATELLITE'          / Time assigned by clock                         TIMEUNIT= 's       '           / Time unit for timimg header keywords           TIERRELA=               1.0E-8 / [s/s] relative errors expressed as rate        TIERABSO=                  1.0 / [s] timing  precision  in seconds              TSTART  = 4.676102214005800E+08 / Time of first attitude record                 TSTOP   = 4.676127160006000E+08 / Time of last attitude record                  DATE-OBS= '2015-10-27T03:43:37'                                                 DATE-END= '2015-10-27T04:25:12'                                                 CLOCKAPP=                    F / If clock correction are applied (F/T)          TELAPSE =                   0. / TSTOP - TSTART                                 TELESCOP= 'SWIFT   '           / Telescope (mission) name                       OBS_ID  = '00661775000'        / Observation ID                                 TARG_ID =               661775 / Target ID                                      SEG_NUM =                    0 / Segment number                                 RA_PNT  =     272.444613480852 / [deg] RA pointing                              DEC_PNT =     61.3719790561863 / [deg] Dec pointing                             PA_PNT  =     238.909630482004 / [deg] Position angle (roll)                    EQUINOX =                2000. / Equinox for pointing RA/Dec                    RADECSYS= 'FK5     '           / Coordinates System                             OBJECT  = 'GRB151027a'         / Object name                                    RA_OBJ  =             272.4886 / [deg] R.A. Object                              DEC_OBJ =             61.35152 / [deg] Dec Object                               ORIGIN  = 'GSFC    '           / Source of FITS file                            PROCVER = '3.17.01 '           / Processing script version                      SEQPNUM =                    4 / Number of times the dataset processed          CREATOR = 'unpacket'           / Program that created this FITS file            HISTORY TASK: FMEMSORT on FILENAME: sw00661775000sat.fits[2]                    HISTORY fmemsort4.1 at 2015-11-06T05:46:00                                      DATE    = '2015-11-06T05:46:00'                                                 ATTFLAG = '100     '           / Attitude origin: 100=sat/spacecraft            SOFTVER = 'Hea_27Jul2015_V6.17_Swift_Rel4.5(Bld34)_27Jul2015_SDCpatch_0'        CALDBVER= 'b20090130_u20111031_x20150721_m20150911' / CALDB index versions used TRIGTIME=        467611119.488 / [s] MET TRIGger Time for Automatic Target      PREFR   =              5.0E-01 / For maketime: time interval before a row       POSTFR  =              5.0E-01 / For maketime: time interval after a row        HISTORY TASK: MAKETIME on FILENAME: /local/data/bat1/alien/Swift_3rdBATcatalog/eHISTORY vent/batevent_reproc/trigger661775/00661775000-results/auxil/sw006617750HISTORY 00sat.fits.gz[ACS_DATA]                                                 HISTORY maketime2.9 at 2015-11-16T06:12:20                                      HISTORY Expression: FLAGS == b1xxxxxxx                                          HISTORY CFITSIO used the following filtering expression to create this table:   HISTORY /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/triggerHISTORY 661775/00661775000-results/gti/sw00661775000b_acs_10am.gti[STDGTI][(STARHISTORY T < 467611119.488) && (STOP > 467611119.488)]                           END                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             A»ß-¾Lô A»ß-ùÀì