--- header unit 0: primary ---
SIMPLE = T / file does conform to FITS standard
BITPIX = -32 / number of bits per data pixel
NAXIS = 2 / number of data axes
NAXIS1 = 241 / length of data axis
NAXIS2 = 241 / length of data axis
EXTEND = T / FITS dataset may contain extensions
COMMENT FITS (Flexible Image Transport System) format is defined in 'Astronomy
COMMENT and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H
HDUNAME = 'PRIMARY'
BUNIT = 'counts' / Units after BSCALE applied
COMMENT FITS (Flexible Image Transport System) format is defined in 'Astronomy
COMMENT and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H
CONTENT = 'IMAGE'
TELESCOP = 'XMM' / mission name
INSTRUME = 'EPIC' / instrument name
OBS_MODE = 'POINTING' / obs mode: POINTING,SLEW, OR SCAN
RADECSYS = 'FK5' / Equatorial system reference
EQUINOX = 2.0000000000000E+03 / Equinox
EXPOSURE = 8.2916890000000E+04 / Reference pixel
COMMENT This file was produced using the XMM-ESAS software written by
COMMENT S. L. Snowden, and written using the FITSIO package of
COMMENT W. D. Pence.
DSTYP1 = 'POS(X,Y)' / DM Keyword: Descriptor name.
LONGSTRN = 'OGIP 1.0' / The HEASARC Long String Convention may be used.
COMMENT This FITS file may contain long string keyword values that are
COMMENT continued over multiple keywords. The HEASARC convention uses the &
COMMENT character at the end of each substring which is then continued
COMMENT on the next keyword which has the name CONTINUE.
DSVAL1 = 'Circle(414.089,428.917,120)&!Circle(405.257,464.565,7.28676)&!Circle(454.155,440.906,7.85324)&!Circle(452.892,448.478,7.50184)&!Circle(466.699,471.534,11.0259)&!Circle(428.285,414.09,4.06468)&!Circle(440.588,418.506,5.90204)&!Circle(439.96,414.406,5.09052)&!Circle(369.92,464.251,7.70992)&!Circle(442.48,402.418,3.69797)&!Circle(432.074,482.546,7.4924)&!Circle(462.358,462.042,10.0049)&!Circle(381.281,414.404,5.61168)&!Circle(350.361,450.37,6.30976)&!Circle(336.48,415.665,5.45844)&!Circle(411.253,391.689,4.351)&!Circle(420.401,381.282,5.22524)&!Circle(453.526,395.79,4.5108)&!Circle(462.986,410.618,3.4129)&!Circle(435.248,376.002,12.0987)&!Circle(413.002,367.001,8.9294)&!Circle(432.752,365.25,16.9528)&!Circle(468.75,346.002,36.9039)&!Circle(364.498,346.999,9.61416)&!Circle(318.747,463.751,17.3316)&!Circle(347.749,471.002,8.04328)&!Circle(357.501,484.751,7.60672)&!Circle(354.998,492.998,9.19388)&!Circle(403.25,502.001,7.31364)&!Circle(392.502,509.749,9.84548)&!Circle(401.501,521.749,9.19956)&!Circle(408.752,344.749,17.3886)&!Circle(428.999,342.002,10.3466)&!Circle(402.998,362.501,8.4264)&!Circle(495.251,452.749,7.30696)&!Circle(426.498,546.502,18.8568)&!Circle(409.002,548.501,21.3688)&!Circle(351.002,516.498,18.2212)&!Circle(329.999,511.5,13.954)&!Circle(307.5,439.502,17.0718)&!Circle(301.499,456.501,17.2872)&!Circle(311.998,370.498,17.3036)&!Circle(441.002,308.002,32.837)&!Circle(530.498,452.499,24.6029)&!Circle(544.003,416.999,25.107)&!Circle(364.499,412.499,10.1935)&!Circle(415.998,462.002,7.61128)' / DM Keyword: Descri
DSFORM1 = 'D' / DM Keyword: Descriptor datatype.
CTYPE1P = 'X'
CRVAL1P = 0.0000000000000E+00
CRPIX1P = 0.0000000000000E+00
CDELT1P = 1.0000000000000E+00
WCSTY1P = 'PHYSICAL'
LTV1 = 0.0000000000000E+00
LTM1_1 = 1.0000000000000E+00
CTYPE2P = 'Y'
CRVAL2P = 0.0000000000000E+00
CRPIX2P = 0.0000000000000E+00
CDELT2P = 1.0000000000000E+00
WCSTY2P = 'PHYSICAL'
LTV2 = 0.0000000000000E+00
LTM2_2 = 1.0000000000000E+00
MTYPE1 = 'EQPOS' / DM Keyword: Descriptor name.
MFORM1 = 'RA,DEC' / [deg]
CTYPE1 = 'RA---TAN'
CRVAL1 = 3.4409125000000E+01
CRPIX1 = 1.5791000000000E+02
CDELT1 = -6.9444444400000E-04
CUNIT1 = 'deg'
CTYPE2 = 'DEC--TAN'
CRVAL2 = -3.7431388900000E+00
CRPIX2 = 1.4291000000000E+02
CDELT2 = 6.9444444400000E-04
CUNIT2 = 'deg'
HISTNUM = 7
HISTORY TOOL :dmcopy 2016-05-13T17:57:51 ASC00001
HISTORY PARM :infile=back400-3000_comb.fits[(x,y)=region(filter.reg)] ASC00002
HISTORY PARM :outfile=back_masked.fits ASC00003
HISTORY PARM :kernel=default ASC00004
HISTORY PARM :option= ASC00005
HISTORY PARM :verbose=0 ASC00006
HISTORY PARM :clobber=no ASC00007