WMAP 28 TT Cross-Power Spectra
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/

Primary Header

SIMPLE  =                    T / file does conform to FITS standard             
BITPIX  =                   16 / 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    = '2003-01-27T00:00:00' /file creation date (YYYY-MM-DDThh:mm:ss UT)    
TELESCOP= 'MAP     '           / Microwave Anisotropy Probe                     
COMMENT   This file contains the cross power spectrum for each of               
COMMENT   the 28 unique DA combinations based on the first year of observations 
REFERENC= 'MAP Explanatory Supplement: http://lambda.gsfc.nasa.gov/             
VERSION = 'PASS 1  '           / Internal MAP Version                           
STARTGMT= '20012220000000000000' / Start time of TOD used                       
ENDGMT  = '20022212359000000000' / End time of TOD used                         
STOKES  = 'Intensity'          / i, q, or u                                     
RESOLUTN=                    9 / Resolution index                               
WTBOUND1=                  200 / Multipole where weighting scheme changes       
WTBOUND2=                  450 / Multipole where weighting scheme changes       
COMMENT   Weighting schemes are uniform from l=2 through l=WTBOUND1;            
COMMENT   intermediate from l=WTBOUND1+1 through l=WTBOUND2;  and               
COMMENT   n_inverse from l=WTBOUND2+1 through the maximum l                     
GALMASK = '/map/data/flight/pass1/ref/alt_mask_K_p2_v2_src.fits' / Galaxy mask  
PLANETS = 'MJSUN   '           / Planets avoided                                
COMMENT Planet codes: [M]ars, [J]upiter, [S]aturn, [U]ranus, [N]eptune          
SHIELDS = 'S       '           / Shield angle avoidance                         
COMMENT Shield codes: [S]un, [E]arth, [M]oon                                    
END                                                                             

Extension Header #1

XTENSION= 'BINTABLE'           /binary table extension                          
BITPIX  =                    8 /8-bit bytes                                     
NAXIS   =                    2 /2-dimensional binary table                      
NAXIS1  =                    8 /width of table in bytes                         
NAXIS2  =                  900 /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  = 'L       '           /label for field   1                             
TFORM1  = 'E       '           /data format of field: 4-byte REAL               
TUNIT1  = '        '           /physical unit of field                          
TTYPE2  = 'DT2     '           /label for field   2                             
TFORM2  = 'E       '           /data format of field: 4-byte REAL               
TUNIT2  = 'uK^2    '           /physical unit of field                          
EXTNAME = 'Q1xQ2   '           /name of this binary table extension             
DATE    = '2003-01-27T00:00:00' /Table/MAP creation date                        
COMMENT   DT2 is thermodynamic temperature squared                              
COMMENT   and is l*(l+1)*C_l/(2*pi)                                             
END                                                                             

More information concerning the format of this file is available.