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Legacy Archive for Microwave Background Data Analysis

WMAP Noise Simulations Skymap
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    = '2003-09-07T15:40:53' / file creation date (YYYY-MM-DDThh:mm:ss UT)   
TELESCOP= 'MAP     '           / Microwave Anisotropy Probe                     
OBJECT  = 'ALL-SKY '           / Portion of sky given                           
EQUINOX =               2000.0 / Equinox of coordinates                         
REFERENC= 'MAP Explanatory Supplement'                                          
VERSION = 'SIM_P1a '           / Software Version or Pass                       
APPLICTN= 'iterate_map'        / Pipeline application                           
STARTGMT= '20012220000000000000' / Start time of TOD used                       
ENDGMT  = '20022212359590000000' / End time of TOD used                         
N_ITER  =                    8 / Iteration number                               
DA      = 'K1      '           / Differencing Assembly                          
STOKES  = 'Intensity'          / i, q, or u                                     
RESOLUTN=                    9 / Resolution index                               
SKYCOORD= 'Galactic'           / Coordinate system                              
CAL_SRC = 'Archive '           / Calibration source                             
GALMASK = '/map/data/sim_p1a/ref/proc_mask_K_p8_v1_unsm.fits' / Galaxy mask sour
SYSERR1 = '[0,0,0,0,0,0,0,0,0,0]' / Systematic error list                       
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]arch, [M]oon                                    
PIXTYPE = 'HEALPIX '           / Pixel algorithm                                
ORDERING= 'NESTED  '           / Ordering scheme                                
NSIDE   =                  512 / Resolution parameter                           
NPIX    =              3145728 / # of pixels                                    
FIRSTPIX=                    0 / First pixel (0 based)                          
LASTPIX =              3145727 / Last pixel (0 based)                           
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  =              3145728 / 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                   
COMMENT                                                                         
COMMENT  *** End of mandatory fields ***                                        
COMMENT                                                                         
COMMENT                                                                         
COMMENT  *** Column names ***                                                   
COMMENT                                                                         
TTYPE1  = 'TEMPERATURE '       / label for field   1                            
COMMENT                                                                         
COMMENT  *** Column formats ***                                                 
COMMENT                                                                         
TFORM1  = 'E       '           / data format of field: 4-byte REAL              
TUNIT1  = 'mK,thermodynamic'   / physical unit of field                         
TTYPE2  = 'N_OBS   '           / label for field   2                            
TFORM2  = 'E       '           / data format of field: 4-byte REAL              
TUNIT2  = 'counts  '           / physical unit of field                         
EXTNAME = 'Archive Map Table'  / name of this binary table extension            
DATE    = '2003-09-07T11:40:53' / Table/MAP creation date                       
PIXTYPE = 'HEALPIX '           / Pixel algorithm                                
ORDERING= 'NESTED  '           / Ordering scheme                                
NSIDE   =                  512 / Resolution parameter                           
FIRSTPIX=                    0 / First pixel (0 based)                          
LASTPIX =              3145727 / Last pixel (0 based)                           
END                                                                             

More information concerning the format of this file is available.

  • Webmaster: Michael R. Greason
  • NASA Official: Dr. Gary F. Hinshaw
  • Page Updated: Friday, 18-Apr-2008
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