WMAP Low Res. Inverse Covariance Matrix
Per Differencing Assembly
Single Year
FITS Header Information

The data made available through this page has been updated. The most recent version of this data may be accessed through /product/map/current/

This matrix is stored in the primary header/data unit.

Primary Header

SIMPLE  =                    T /FITS format
BITPIX  =                  -32 /Dummy primary header
NAXIS   =                    2 /Number of dimensions
NAXIS1  =                12288 /
NAXIS2  =                12288 /
EXTEND  =                    T /Extensions may be present
RESOLUTN=                    4 /Resolution Index
PIXTYPE = 'HEALPIX '           /Pixel algorigthm
ORDERING= 'NESTED  '           /Ordering scheme
NSIDE   =                   16 /Resolution parameter
NPIX    =                 3072 /# pixels in the maps
DATE    = '2006-02-23T23:31:58' /file creation date (YYYY-MM-DDThh:mm:ss UT)
FREQ    = 'V band  '           /Frequency band
RELEASE = 'DR2     '           /WMAP Release
REFERENC= 'WMAP Explanatory Supplement:  http://lambda.gsfc.nasa.gov/' /
COMMENT N-inverse covariance matrices for the Res 4 maps.
COMMENT This is a 4Nx4N matrix, ordered (I, Q, U, S).
COMMENT The first year of data went into the maps.
END

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