PDS_VERSION_ID                   = PDS3                                       
RECORD_TYPE                      = STREAM                                     
                                                                              
OBJECT                           = DATA_SET                                   
  DATA_SET_ID                    = "NEAR-A-NIS-5-EDR-EROS/ORBIT-V1.0"         
                                                                              
 OBJECT                          = DATA_SET_INFORMATION                       
  DATA_SET_NAME           = "NEAR NIS CALIBRATED SPECTRA FOR EROS/ORBIT V1.0" 
  DATA_SET_COLLECTION_MEMBER_FLG = "N"                                        
  DATA_SET_TERSE_DESC            = "This data set contains the NIS Level 2    
  delivery i.e. calibrated NIS spectra in the Nixel database."                
  DATA_OBJECT_TYPE               = SPECTRUM                                   
  START_TIME                     = 1996-04-17T23:53:18.000                    
  STOP_TIME                      = 2000-05-13T11:01:16.000                    
  DATA_SET_RELEASE_DATE          = 2001-09-05                                 
  PRODUCER_FULL_NAME             = "BRIAN T. CARCICH"                         
  DETAILED_CATALOG_FLAG          = "N"                                        
  DATA_SET_DESC                  = "                                          
                                                                              
                                                                              
    Data Set Overview                                                         
    =================                                                         
      This data set contains the NEAR infrared spectrometer (NIS)             
      data for the EROS/ORBIT phase.                                          
                                                                              
      The data are calibrated data, provided in scientific units,             
      that have been formatted into FITS file format (NASA Office             
      of Science and Technology (NOST), 100-1.0). In addition to the          
      raw spectrometer data, a calibration file and algorithm are             
      available. This data set is archived as a set of CDROM images           
      as a part of the NEAR EDR volume set.                                   
                                                                              
                                                                              
    Parameters                                                                
    ==========                                                                
      The only special parameter in the INDEX/INDEX.TAB file is MET,          
      which approximates the Mission Elapsed Time in seconds.                 
                                                                              
                                                                              
    Data                                                                      
    ====                                                                      
      The data are in a FITS file called the nixel database.                  
      The nixel database maintains large amounts of information               
      along with each spectrum:  instrument housekeeping; observational       
      geometry; footprint location on the target.                             
                                                                              
      Some columns record user inputs that controlled Niscal, the NIS         
      calibration procedure run to generate the values in the table.          
      Those fields are CALIBRATION_MODE_BITS, DARK_MODE, NOISE_MODE,          
      RADIANCE_MODE, and SLIT_MODE.  Those columns' possible values           
      and their meanings are described in the file NIXDB.LBL.                 
                                                                              
      Some columns may be used to determine the type of observation e.g.      
      a spectrum with field-of-view completely on, partially on, or completely
      off the asteroid, a spectrum of the calibration plaque a spectrum with  
      the slit set to narrow or wide and the shutter open or closed (dark).   
      Those columns are SLIT_SHUTTER_FLAG, MIRROR_POSITION, and               
      POLYGON_TYPE_FLAG.  Those columns' possible values                      
      and their meanings are described in the file NIXDB.LBL.                 
                                                                              
      One column describes the data quality index which highlights suspect    
      spectra:  NIS_DQI.  Those columns' possible values                      
      and their meanings are described in the file NIXDB.LBL.                 
                                                                              
                                                                              
    Ancillary Data                                                            
    ==============                                                            
      The files in CALIB/ are the ones used in the actual                     
      calibration of the data in DATA/.  The DESCRIPTION field in each        
      calibration file's PDS label describes what role that file plays        
      in NIS calibration.  The calibration procedure is described in          
      even more detail under the DOCUMENT/ tree.                              
                                                                              
      The GEOMETRY directory is described above.                              
                                                                              
      The calibration plaque for the NIS instrument is made with              
      Infragold LF (trademarked) which is a porous metal surface              
      with a gold coating.                                                    
      See files referred to by DOCUMENT/NIS.LBL for further information.      
                                                                              
                                                                              
    Media/Format                                                              
    ============                                                              
      This data set is released as a CDROM set.                               
                                                                              
                                                                              
    Processing History                                                        
    ==================                                                        
      The processing history includes dark current                            
      and lighting geometry corrections necessary to convert from             
      raw data to I/F units.  The location of each spectrum's                 
      field of view was determined using a 22,540 plate shape                 
      model of Eros, PDS PRODUCT_ID = 'PLATE-EROS-2001012-022540'             
      of DATA_SET_ID = 'NEAR-A-MSI-5-EROS-SHAPE-MODELS-V1.0'."                
                                                                              
                                                                              
    CONFIDENCE_LEVEL_NOTE          = "                                        
                                                                              
                                                                              
    Data Quality Flag                                                         
    =================                                                         
      Each spectrum includes a quality flag value in the                      
      data quality field, extracted from the original data label and adjusted 
      by the Niscal program. The values of this keyword are defined           
      below.  The data quality flag is non-zero when there is missing         
      data or other problems with the spectra.  The                           
      possible values of this field are described in the file NIXDB.LBL.      
                                                                              
                                                                              
    Review                                                                    
    ======                                                                    
      This data set underwent external peer review within PDS in August,      
      2001."                                                                  
                                                                              
 END_OBJECT                       = DATA_SET_INFORMATION                      
                                                                              
 OBJECT                            = DATA_SET_TARGET                          
    TARGET_NAME                    = "EROS"                                   
 END_OBJECT                        = DATA_SET_TARGET                          
                                                                              
 OBJECT                            = DATA_SET_HOST                            
  INSTRUMENT_HOST_ID               = "NEAR"                                   
  INSTRUMENT_ID                    = "NIS"                                    
 END_OBJECT                        = DATA_SET_HOST                            
                                                                              
 OBJECT                            = DATA_SET_REFERENCE_INFORMATION           
   REFERENCE_KEY_ID                = "CHENGETAL1998"                          
 END_OBJECT                        = DATA_SET_REFERENCE_INFORMATION           
                                                                              
 OBJECT                            = DATA_SET_REFERENCE_INFORMATION           
   REFERENCE_KEY_ID                = "WARRENETAL1997"                         
 END_OBJECT                        = DATA_SET_REFERENCE_INFORMATION           
                                                                              
END_OBJECT                         = DATA_SET                                 
END