CDBS GHRS Page

Note: When accessing files, be aware of the different formats these files and tables are in (File Structures).

• GHRS:
• ZREF (Reference files)
• ZTAB (Reference tables)
• MTAB: (Hstcomp and Hstgraph tables)
• Types of data:
• Diode Response, Photocathode Response, Vignetting
• Absolute Flux,Wavelength Net, Data Quality
• Line Mapping parameters, Sample Mapping parameters
• Detector parameters, Wavelength Ranges, etc.

GHRS reference data consists of 6 reference file types and 16 table types. The information listed below gives a simple discription of each along with how each are named. For further information on the naming conventions, go to File Structures.

HRS reference files
===============     
                                           ASSOCIATED           DATABASE
ROOT     EXTENSION  FILE_TYPE              DATA QUALITY FILE    RELATION
--------------------------------------------------------------------------

ROOTNAME.R0H                                                  CZDIOR (R0H) 
ROOTNAME.R0D        DIO (DIODE RESPONSE)

ROOTNAME.R1H                                                  CZPHCR (R1H) 
ROOTNAME.R1D        PHC (CATHODE RESPONSE)

ROOTNAME.R2H                                                  CZVIGR (R2H) 
ROOTNAME.R2D        VIG (VIGNETTING)

ROOTNAME.R3H                                                  CZABSR (R3H) 
ROOTNAME.R3D        ABS (ABSOLUTE FLUX)

ROOTNAME.R4H                                                  CZNETR (R4H) 
ROOTNAME.R4D        NET (WAVELENGTH NET)

ROOTNAME.R5H                                                  CZQINR (R5H) 
ROOTNAME.R5D        QIN ( DQ INIT)
--------------------------------------------------------------------------
HRS sdas tables
===============

ROOTNAME.CZ1        HRS LINE MAPPING PARAMETERS               CZCCR1R 
ROOTNAME.CZ2        HRS SAMPLE MAPPING PARAMETERS             CZCCR2R 
ROOTNAME.CZ3        HRS DETECTOR PARAMETERS                   CZCCR3R 
ROOTNAME.CZ4        HRS WAVELENGTH RANGES                     CZCCR4R 
ROOTNAME.CZ5        HRS SPECTRAL ORDER CONSTANTS              CZCCR5R 
ROOTNAME.CZ6        HRS DISPERSION CONSTANTS                  CZCCR6R 
ROOTNAME.CZ7        HRS THERMAL CONSTANTS                     CZCCR7R 
ROOTNAME.CZ8        HRS INCIDENCE ANGLE CONSTANTS             CZCCR8R 
ROOTNAME.CZ9        HRS ECHELLE RIPPLE INTERPOLATION CONSTAN  CZCCR9R 
ROOTNAME.CZA        HRS ECHELLE RIPPLE NON-INTERPOLATION CON  CZCCRAR 
ROOTNAME.CZB        HRS SCALE FACTORS FOR SCATTERED           CZCCRBR 
                    LIGHT SUBTRACTION     
ROOTNAME.CZC        HRS GLOBAL WAVELENGTH COEFFICIENTS        CZCCRCR 
ROOTNAME.CZD        HRS PHOTOCATHODE BLEMISH LOCATION TABLE   CZCCRDR 
ROOTNAME.CMG        PAIRED PULSE PARAMETERS                   COCCG2R 
ROOTNAME.CZY        PT-NE LAMP LINE LIST, CORRECTED           CZPTNELINEC 
                    TO VAC. WAVELENGTHS       
ROOTNAME.CZZ        COEFFIENTS TO A FIT OF OFFSETS BETWEEN    CZSCOFFC    
                    APERTURES (SSA) AND (SC1;SC2)

Calibration Processing Flow Diagram

For further information, go to the