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Appendix: Example FITS Table Headers

PHDU

SIMPLE  =                    T / file does conform to FITS standard
BITPIX  =                    8 / 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
ORIGIN  = 'NRAO Green Bank'    /
INSTRUME= 'CCB     '           / device or program of origin
GBTMCVER= 'integration'        / telescope control software release
FITSVER = '2.0     '           / FITS definition version for this device
DATEBLD = '2005-06-13T18:26:23' / time program was linked
SIMULATE=                    0 / Is the instrument in simulate mode?
DATE-OBS= '2005-06-23T20:27:12' / Manager parameter startTime
TIMESYS = 'UTC     '           / time scale specification for DATE-OBS
TELESCOP= 'NRAO_GBT_SIMULATOR' / Simulation of the Robert C. Byrd 100m
OBJECT  = 'ou812   '           / Manager parameter source
PROJID  = 'TCCB    '           / Manager parameter projectId
OBSID   = 'blah    '           / Manager parameter scanId
SCAN    =                    1 / Manager parameter scanNumber
ACTPSW  = 'Both    '           / active phase switches
INPSWSTA=                    T / closed phase switch A
INPSWSTB=                    T / closed phase switch B
ADCSAMPT=              1.0E-07 / ADC sample time in seconds
SMPPERST=                  250 / number of 100 ns samples per switch state
CALCYCLN=                   10 / number of integrations per calibration cycle
CALOFFIG=                    8 / number of integrations per cals off phase
LCALONIG=                    2 / number of integrations per left cal on phase
RCALONIG=                    0 / number of integrations per right cal on phase
BCALONIG=                    0 / number of integrations per both cals on phase
INTGPD  =                  500 / number of switch cycles per integration
PSWDT   =                    1 / number of blanked samples after switch change
CRISEDT =                    1 / number of blanked samples after calibration on
CFALLDT =                    1 / number of blanked samples after calibration off
RNDTRPDT=                    5 / number of 100 ns samples per propagation delay
HOLDOFF =                    7 / minimum number of samples between interrupts
INTEGRAT= 2.490000000000000E-05 / integration time per integ. per phase bin (s)
FAKESMP =                    0 / flags generation of fake pseudo-random samples
COMMENT A phase-switch bin represents one switch setting for an integration
END

PORT Table

SIMPLE  =                    T / file does conform to FITS standard
BITPIX  =                    8 / 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
ORIGIN  = 'NRAO Green Bank'    /
INSTRUME= 'CCB     '           / device or program of origin
GBTMCVER= 'integration'        / telescope control software release
FITSVER = '2.0     '           / FITS definition version for this device
DATEBLD = '2005-06-13T18:26:23' / time program was linked
SIMULATE=                    0 / Is the instrument in simulate mode?
DATE-OBS= '2005-06-23T20:27:12' / Manager parameter startTime
TIMESYS = 'UTC     '           / time scale specification for DATE-OBS
TELESCOP= 'NRAO_GBT_SIMULATOR' / Simulation of the Robert C. Byrd 100m
OBJECT  = 'ou812   '           / Manager parameter source
PROJID  = 'TCCB    '           / Manager parameter projectId
OBSID   = 'blah    '           / Manager parameter scanId
SCAN    =                    1 / Manager parameter scanNumber
ACTPSW  = 'Both    '           / active phase switches
INPSWSTA=                    T / closed phase switch A
INPSWSTB=                    T / closed phase switch B
ADCSAMPT=              1.0E-07 / ADC sample time in seconds
SMPPERST=                  250 / number of 100 ns samples per switch state
CALCYCLN=                   10 / number of integrations per calibration cycle
CALOFFIG=                    8 / number of integrations per cals off phase
LCALONIG=                    2 / number of integrations per left cal on phase
RCALONIG=                    0 / number of integrations per right cal on phase
BCALONIG=                    0 / number of integrations per both cals on phase
INTGPD  =                  500 / number of switch cycles per integration
PSWDT   =                    1 / number of blanked samples after switch change
CRISEDT =                    1 / number of blanked samples after calibration on
CFALLDT =                    1 / number of blanked samples after calibration off
RNDTRPDT=                    5 / number of 100 ns samples per propagation delay
HOLDOFF =                    7 / minimum number of samples between interrupts
INTEGRAT= 2.490000000000000E-05 / integration time per integ. per phase bin (s)
FAKESMP =                    0 / flags generation of fake pseudo-random samples
COMMENT A phase-switch bin represents one switch setting for an integration
END

CCBSTATE Table

XTENSION= 'BINTABLE'           / binary table extension                       
BITPIX  =                    8 / 8-bit bytes                                    
NAXIS   =                    2 / 2-dimensional binary table                     
NAXIS1  =                    8 / width of table in bytes                        
NAXIS2  =                    4 / 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  = 'PHIA    '           / label for field   1                            
TFORM1  = '1J      '           / data format of field: 4-byte INTEGER           
TUNIT1  = 'state   '           / physical unit of field                         
TTYPE2  = 'PHIB    '           / label for field   2                            
TFORM2  = '1J      '           / data format of field: 4-byte INTEGER           
TUNIT2  = 'state   '           / physical unit of field                         
EXTNAME = 'CCBSTATE'           / name of this binary table extension            
NPHASES =                    4 / number of phases per phase switching cycle     
END

DATA Table

XTENSION= 'BINTABLE'           / binary table extension                         
BITPIX  =              8 / 8-bit bytes                                    
NAXIS   =                    2 / 2-dimensional binary table                     
NAXIS1  =                   96 / width of table in bytes                        
NAXIS2  =                  200 / number of rows in table
PCOUNT  =                    0 / size of special data area                      
GCOUNT  =                    1 / one data group (required keyword)              
TFIELDS =                    7 / number of fields in each row                   
TTYPE1  = 'DMJD    '           / label for field   1                            
TFORM1  = '1D      '           / data format of field: 8-byte DOUBLE            
TUNIT1  = 'd       ' / physical unit of field                         
TTYPE2  = 'SLAVEOK '           / label for field   2                            
TFORM2  = '4L  '           / data format of field: 1-byte LOGICAL           
TUNIT2  = 'bool    '           / physical unit of field                         
TTYPE3  = 'USABLE  '           / label for field   3                            
TFORM3  = 'I       '           / data format of field: 2-byte INTEGER
TUNIT3  = 'status  '           / physical unit of field                         
TTYPE4  = 'CALA    '           / label for field   4
TFORM4  = 'L       '           / data format of field: 1-byte LOGICAL           
TUNIT4  = 'state   '           / physical unit of field                         
TTYPE5  = 'CALB    '           / label for field   5                            
TFORM5  = 'L       '           / data format of field: 1-byte LOGICAL           
TUNIT5  = 'state   '           / physical unit of field                         
TTYPE6  = 'OVRFLOW'           / label for field   6                            
TFORM6  = '16L     '           / data format of field: 1-byte LOGICAL           
TUNIT6  = 'bool    '           / physical unit of field                         
TTYPE7  = 'DATA    '           / label for field   7
TFORM7  = '16J     '           / data format of field: 4-byte INTEGER           
TZERO7  =           2147483648 / offset for unsigned integers                   
TSCAL7  =                    1 / data are not scaled                            
TUNIT7  = 'ulong   '           / physical unitof field                         
EXTNAME = 'DATA    '           / name of this binary table extension            
TDIM6   = '(4,4)   '           / size of the multidimensional array             
TDESC6  = 'PORT,CCBSTATE'      / definition of axes                             
TDIM7   = '(4,4)   '          / size of the multidimensional array             
TDESC7  = 'PORT,CCBSTATE'      / definition of axes                             
END



Bob Garwood
2011-07-23