ABOUT LAMBDA

FITS Header

Primary Header

SIMPLE  =                    T / file does conform to FITS standard
BITPIX  =                   32 / 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 'Astronomy
COMMENT   and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H
DATE    = '2015-08-11T05:35:49' / file creation date (YYYY-MM-DDThh:mm:ss UT)
END

Extension Header 1

XTENSION= 'BINTABLE'           / binary table extension
BITPIX  =                    8 / 8-bit bytes
NAXIS   =                    2 / 2-dimensional binary table
NAXIS1  =                24576 / width of table in bytes
NAXIS2  =                 3072 / 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
COMMENT  -----------------------------------------------
COMMENT  Sky Map Pixelisation Specific Keywords
COMMENT  -----------------------------------------------
PIXTYPE = 'HEALPIX '           / HEALPIX Pixelisation
ORDERING= 'NESTED  '           / Pixel ordering scheme, either RING or NESTED
NSIDE   =                  512 / Resolution parameter for HEALPIX
FIRSTPIX=                    0 / First pixel # (0 based)
LASTPIX =              3145727 / Last pixel # (0 based)
COORDSYS= 'G       '           / Pixelisation coordinate system
COMMENT  G = Galactic, E = ecliptic, C = celestial = equatorial
BAD_DATA= '-1.637500000000E+30' / Sentinel value given to bad pixels
POLCCONV= 'COSMO   '           / Coord. convention for polarisation (COSMO/IAU)
COMMENT
COMMENT  -----------------------------------------------
COMMENT  Data Description Specific Keywords
COMMENT  -----------------------------------------------
INDXSCHM= 'IMPLICIT'           / Indexing : IMPLICIT or EXPLICIT
GRAIN   =                    0 / Grain of pixel indexing
COMMENT  GRAIN=0 : no indexing of pixel data                         (IMPLICIT)
COMMENT  GRAIN=1 : 1 pixel index -> 1 pixel data                     (EXPLICIT)
COMMENT  GRAIN>1 : 1 pixel index -> data of GRAIN consecutive pixels (EXPLICIT)
COMMENT
POLAR   = '.true.  '           / Polarisation included (True/False)
COMMENT
TTYPE1  = 'TEMPERATURE'        / Temperature map
TFORM1  = '1024D   '           / data format of field: 8-byte REAL
TUNIT1  = 'muK, thermodynamic' / map unit
COMMENT
TTYPE2  = 'Q-POLARISATION'     / Q Polarisation map
TFORM2  = '1024D   '           / data format of field: 8-byte REAL
TUNIT2  = 'muK, thermodynamic' / map unit
COMMENT
TTYPE3  = 'U-POLARISATION'     / U Polarisation map
TFORM3  = '1024D   '           / data format of field: 8-byte REAL
TUNIT3  = 'muK, thermodynamic' / map unit
COMMENT
END

A service of the HEASARC and of the Astrophysics Science Division at NASA/GSFC
Goddard Space Flight Center, National Aeronautics and Space Administration
HEASARC Director: Dr. Alan P. Smale
LAMBDA Director: Dr. Eric R. Switzer
NASA Official: Dr. Eric R. Switzer
Web Curator: Mr. Michael R. Greason