PDS_VERSION_ID               = PDS3                                           
                                                                              
/* FILE CHARACTERISTICS DATA ELEMENTS */                                      
                                                                              
RECORD_TYPE                  = FIXED_LENGTH                                   
RECORD_BYTES                 = 2880 /* FITS standard record length */         
FILE_RECORDS                 = 97                                             
FILE_NAME                    = "RA_DARK_4300V.FIT"                            
DATA_FORMAT                  = FITS                                           
                                                                              
/* INSTRUMENT AND MISSION DESCRIPTIVE DATA ELEMENTS */                        
                                                                              
INSTRUMENT_ID                = "ALICE"                                        
INSTRUMENT_NAME              = "ALICE"                                        
INSTRUMENT_TYPE              = "ULTRAVIOLET SPECTROMETER"                     
INSTRUMENT_HOST_ID           = "RO"                                           
INSTRUMENT_HOST_NAME         = "ROSETTA-ORBITER"                              
MISSION_ID                   = "ROSETTA"                                      
MISSION_NAME                 = "INTERNATIONAL ROSETTA MISSION"                
                                                                              
/* DATA OBJECT POINTERS IDENTIFICATION DATA ELEMENTS */                       
^HEADER                      = ("RA_DARK_4300V.FIT",1)                        
^IMAGE                       = ("RA_DARK_4300V.FIT",3)                        
^ERROR_HEADER                = ("RA_DARK_4300V.FIT",49)                       
^ERROR_IMAGE                 = ("RA_DARK_4300V.FIT",50)                       
^DARK_RATE_HEADER            = ("RA_DARK_4300V.FIT",96)                       
^DARK_RATE_TABLE             = ("RA_DARK_4300V.FIT",97)                       
                                                                              
/* PRODUCT, DATA SET, AND VOLUME DATA ELEMENTS */                             
                                                                              
PRODUCT_ID                   = "RA_DARK_4300V"                                
PRODUCT_TYPE                 = REDR /* CODMAC Data Level 3 */                 
PRODUCT_CREATION_TIME        = 2016-03-31                                     
DATA_SET_ID                  = "RO-C/CAL-ALICE-3-ESC4-V1.0"                   
PRODUCER_ID                  = "ROSETTA_ALICE"                                
PRODUCER_FULL_NAME           = "ANDREW J. STEFFL"                             
PRODUCER_INSTITUTION_NAME    = "SOUTHWEST RESEARCH INSTITUTE"                 
                                                                              
/* DATA OBJECT DEFINITIONS */                                                 
                                                                              
OBJECT                       = HEADER                                         
  BYTES                      = 5760 /* RECORD_BYTES x RECORDS */              
  HEADER_TYPE                = FITS                                           
  INTERCHANGE_FORMAT         = BINARY                                         
  RECORDS                    = 2                                              
  DESCRIPTION                = "                                              
    FITS header for the Rosetta-Alice dark count calibration file."           
END_OBJECT                   = HEADER                                         
                                                                              
EXPOSURE_DURATION            = 61665.800 /* From FITS header [seconds] */     
                                                                              
OBJECT                       = IMAGE                                          
  LINE_SAMPLES               = 1024 /* FITS NAXIS1 keyword */                 
  LINES                      = 32 /* FITS NAXIS2 keyword */                   
  SAMPLE_BITS                = 32                                             
  SAMPLE_TYPE                = IEEE_REAL                                      
  AXIS_ORDER_TYPE            = "FIRST_INDEX_FASTEST"                          
  LINE_DISPLAY_DIRECTION     = "UP"                                           
  SAMPLE_DISPLAY_DIRECTION   = "RIGHT"                                        
  DESCRIPTION                = "                                              
    This file contains the dark count rate for the R-Alice detector,          
    as measured by in-flight exposures with the instrument aperture           
    door closed (i.e. darks) and the HV level set to -4300 V. Units           
    are counts per second per pixel. The individual files used to             
    create this calibration product are listed in the FITS header."           
END_OBJECT                   = IMAGE                                          
                                                                              
OBJECT                       = ERROR_HEADER                                   
  BYTES                      = 2880 /* RECORD_BYTES x RECORDS */              
  HEADER_TYPE                = FITS                                           
  INTERCHANGE_FORMAT         = BINARY                                         
  RECORDS                    = 1                                              
  DESCRIPTION                = "                                              
    FITS header for the Rosetta-Alice dark count calibration file."           
END_OBJECT                   = ERROR_HEADER                                   
                                                                              
OBJECT                       = ERROR_IMAGE                                    
  LINE_SAMPLES               = 1024 /* FITS NAXIS1 keyword */                 
  LINES                      = 32 /* FITS NAXIS2 keyword */                   
  SAMPLE_BITS                = 32                                             
  SAMPLE_TYPE                = IEEE_REAL                                      
  AXIS_ORDER_TYPE            = "FIRST_INDEX_FASTEST"                          
  LINE_DISPLAY_DIRECTION     = "UP"                                           
  SAMPLE_DISPLAY_DIRECTION   = "RIGHT"                                        
  DESCRIPTION                = "                                              
    This extension contains the statistical uncertainty for each pixel in the 
    composite dark image"                                                     
END_OBJECT                   = ERROR_IMAGE                                    
                                                                              
OBJECT                       = DARK_RATE_HEADER                               
  BYTES                      = 2880 /* RECORD_BYTES x RECORDS */              
  HEADER_TYPE                = FITS                                           
  INTERCHANGE_FORMAT         = BINARY                                         
  RECORDS                    = 1                                              
  DESCRIPTION                = "                                              
    FITS header for the Rosetta-Alice dark count calibration file."           
END_OBJECT                   = DARK_RATE_HEADER                               
                                                                              
OBJECT                       = DARK_RATE_TABLE                                
  INTERCHANGE_FORMAT         = BINARY                                         
  ROWS                       = 35                                             
  COLUMNS                    = 3                                              
  ROW_BYTES                  = 24                                             
  OBJECT                     = COLUMN                                         
    NAME                     = "ET"                                           
    DATA_TYPE                = IEEE_REAL                                      
    START_BYTE               = 1                                              
    BYTES                    = 8                                              
    DESCRIPTION              = "                                              
      Ephemeris Time (seconds)"                                               
  END_OBJECT                 = COLUMN                                         
  OBJECT                     = COLUMN                                         
    NAME                     = "DARK_RATE"                                    
    DATA_TYPE                = IEEE_REAL                                      
    START_BYTE               = 9                                              
    BYTES                    = 8                                              
    DESCRIPTION              = "                                              
      Summed dark rate for all detector rows but 17 (counts / second)"        
  END_OBJECT                 = COLUMN                                         
  OBJECT                     = COLUMN                                         
    NAME                     = "ROW17_DARK_RATE"                              
    DATA_TYPE                = IEEE_REAL                                      
    START_BYTE               = 17                                             
    BYTES                    = 8                                              
    DESCRIPTION              = "                                              
      Summed dark rate for detector row 17 (counts / second)"                 
  END_OBJECT                 = COLUMN                                         
END_OBJECT                   = DARK_RATE_TABLE                                
                                                                              
END