PDS_VERSION_ID        = PDS3                                                  
RECORD_TYPE           = STREAM                                                
OBJECT                = TEXT                                                  
  INTERCHANGE_FORMAT    = ASCII                                               
  PUBLICATION_DATE      = 2014-01-18                                          
  NOTE                  = "Description of the contents of the calib dir.      
  History:                                                                    
  2014-01 BTCarcich Added genesis of the calibration file.                    
  "                                                                           
END_OBJECT            = TEXT                                                  
END                                                                           
                                                                              
########################################################################      
### N.B. The full description of the calibration procedure is in the          
###      the SOC Instrument Interface Control Document (ICD) in the           
###      /DOCUMENT/ directory of this archive                                 
########################################################################      
                                                                              
Genesis of the calibration data (from the ICD):                               
                                                                              
  In a temperature controlled environment, the electronics from the end of the
  PVDF to the DN in the raw data were calibrated, at each of 4 calibration box
  temperatures and for each of the 14 channels. This was done by injecting 19 
  (actually 21; see the ICD) fixed-amplitude charge pulses 100 times into a   
  channel and recording the DN value each time. From those recorded values,   
  the average DN (DNavg) and its standard deviation (SIG) at each charge pulse
  amplitude, box temperature and channel were calculated. Then, for each box  
  temperature and channel, a 9th order polynomial fit of Q(DNavg) was derived.
  Finally, these 3 sets of values (the polynomial coefficients, DNavg, and    
  SIG) were stored in a matrix. This matrix contains all information required 
  to calculate the charge equivalent to a DN as a function of box temperature 
  and channel (detector), as well as the uncertainty in that calculated charge
  value.                                                                      
                                                                              
That matrix has been broken out into the forty-two PDS ASCII TABLEs in this   
directory.                                                                    
                                                                              
[calib]  Directory containing 42 ASCII TABLEs containing information          
  |      for calibration of data from SDC observations.                       
  |                                                                           
  +-- SDC_CAL_MATRIX_COEF_CHnn.TAB  14 coefficient table files (Note 1)       
  |                                                                           
  +-- SDC_CAL_MATRIX_MEAN_CHnn.TAB  14 mean DN table files (Note 1)           
  |                                                                           
  +-- SDC_CAL_MATRIX_STDV_CHnn.TAB  14 DN standard deviation files (Note 1)   
  |                                                                           
  +-- calinfo.txt                   This file                                 
                                                                              
Note 1:  the nn in each filename above will be a two-digit, zero-padded       
         number from 01 to 14 in the actual filenames, indicating to which    
         of the fourteen SDC channels the file is to be applied.              
                                                                              
Note 2:  Channel 11 is non-functional due to a broken capacitor connection    
         that occurred before launch; that channel generates spurious events  
         that should be ignored.                                              
                                                                              
Refer to the descriptions in the ASCII tables for more detail about what      
is in each table; refer to the SOC Instrument ICD for a description of how    
to use the data in these tables to calibrate SDC data (convert the DN of an   
impact event reading to charge and to mass).                                  
                                                                              
                                                                              
N.B. The SDC calibration matrix has been converted, from the four-            
     dimensional array in the Primary Data Unit of a FITS file, to these      
     42 ASCII tables to make the archive product compliant with PDS           
     standards.  The number of digits displayed in the table is               
     sufficient to reproduce the data in the original FITS files,             
     bit for bit.                                                             
                                                                              
     The rows in the tables, indicating the order of each coefficient in the  
     coefficient tables, or indicating a known input charge used in a         
     100-sample test during ground calibration for the mean DN and DN         
     standard deviation tables, correspond to NAXIS4, the slowest-moving      
     axis in the original FITS file                                           
                                                                              
     The three types of tables correspond to NAXIS3 in the original FITS      
     file.                                                                    
                                                                              
     The fourteen tables within each type of table correspond to NAXIS2 in    
     the original FITS file.                                                  
                                                                              
     The columns in the table, indicating at which temperature each column    
     is valid, correspond to NAXIS1, the fastest moving-axis in the           
     original FITS file.                                                      
                                                                              
     See the EXTRAS/ directory, if present, for more information, including   
     the calibration matrix in its original FITS form as used by the New      
     Horizons data processing and calibration pipeline, and a script to       
     convert these forty-two tables back into the single-file FITS form.      
Icon  Name                              Last modified      Size  Description
[DIR] Parent Directory - [TXT] calinfo.txt 27-Feb-2017 15:56 7.0K [TXT] sdc_cal_matrix_coef_ch01.tab 27-Feb-2017 15:56 15K [Table file] [TXT] sdc_cal_matrix_coef_ch02.tab 27-Feb-2017 15:56 15K [Table file] [TXT] sdc_cal_matrix_coef_ch03.tab 27-Feb-2017 15:56 15K [Table file] [TXT] sdc_cal_matrix_coef_ch04.tab 27-Feb-2017 15:56 15K [Table file] [TXT] sdc_cal_matrix_coef_ch05.tab 27-Feb-2017 15:56 15K [Table file] [TXT] sdc_cal_matrix_coef_ch06.tab 27-Feb-2017 15:56 15K [Table file] [TXT] sdc_cal_matrix_coef_ch07.tab 27-Feb-2017 15:56 15K [Table file] [TXT] sdc_cal_matrix_coef_ch08.tab 27-Feb-2017 15:56 15K [Table file] [TXT] sdc_cal_matrix_coef_ch09.tab 27-Feb-2017 15:56 15K [Table file] [TXT] sdc_cal_matrix_coef_ch10.tab 27-Feb-2017 15:56 15K [Table file] [TXT] sdc_cal_matrix_coef_ch11.tab 27-Feb-2017 15:56 15K [Table file] [TXT] sdc_cal_matrix_coef_ch12.tab 27-Feb-2017 15:56 15K [Table file] [TXT] sdc_cal_matrix_coef_ch13.tab 27-Feb-2017 15:56 15K [Table file] [TXT] sdc_cal_matrix_coef_ch14.tab 27-Feb-2017 15:56 15K [Table file] [TXT] sdc_cal_matrix_mean_ch01.tab 27-Feb-2017 15:56 15K [Table file] [TXT] sdc_cal_matrix_mean_ch02.tab 27-Feb-2017 15:56 15K [Table file] [TXT] sdc_cal_matrix_mean_ch03.tab 27-Feb-2017 15:56 15K [Table file] [TXT] sdc_cal_matrix_mean_ch04.tab 27-Feb-2017 15:56 15K [Table file] [TXT] sdc_cal_matrix_mean_ch05.tab 27-Feb-2017 15:56 15K [Table file] [TXT] sdc_cal_matrix_mean_ch06.tab 27-Feb-2017 15:56 15K [Table file] [TXT] sdc_cal_matrix_mean_ch07.tab 27-Feb-2017 15:56 15K [Table file] [TXT] sdc_cal_matrix_mean_ch08.tab 27-Feb-2017 15:56 15K [Table file] [TXT] sdc_cal_matrix_mean_ch09.tab 27-Feb-2017 15:56 15K [Table file] [TXT] sdc_cal_matrix_mean_ch10.tab 27-Feb-2017 15:56 15K [Table file] [TXT] sdc_cal_matrix_mean_ch11.tab 27-Feb-2017 15:56 15K [Table file] [TXT] sdc_cal_matrix_mean_ch12.tab 27-Feb-2017 15:56 15K [Table file] [TXT] sdc_cal_matrix_mean_ch13.tab 27-Feb-2017 15:56 15K [Table file] [TXT] sdc_cal_matrix_mean_ch14.tab 27-Feb-2017 15:56 15K [Table file] [TXT] sdc_cal_matrix_stdv_ch01.tab 27-Feb-2017 15:56 15K [Table file] [TXT] sdc_cal_matrix_stdv_ch02.tab 27-Feb-2017 15:56 15K [Table file] [TXT] sdc_cal_matrix_stdv_ch03.tab 27-Feb-2017 15:56 15K [Table file] [TXT] sdc_cal_matrix_stdv_ch04.tab 27-Feb-2017 15:56 15K [Table file] [TXT] sdc_cal_matrix_stdv_ch05.tab 27-Feb-2017 15:56 15K [Table file] [TXT] sdc_cal_matrix_stdv_ch06.tab 27-Feb-2017 15:56 15K [Table file] [TXT] sdc_cal_matrix_stdv_ch07.tab 27-Feb-2017 15:56 15K [Table file] [TXT] sdc_cal_matrix_stdv_ch08.tab 27-Feb-2017 15:56 15K [Table file] [TXT] sdc_cal_matrix_stdv_ch09.tab 27-Feb-2017 15:56 15K [Table file] [TXT] sdc_cal_matrix_stdv_ch10.tab 27-Feb-2017 15:56 15K [Table file] [TXT] sdc_cal_matrix_stdv_ch11.tab 27-Feb-2017 15:56 15K [Table file] [TXT] sdc_cal_matrix_stdv_ch12.tab 27-Feb-2017 15:56 15K [Table file] [TXT] sdc_cal_matrix_stdv_ch13.tab 27-Feb-2017 15:56 15K [Table file] [TXT] sdc_cal_matrix_stdv_ch14.tab 27-Feb-2017 15:56 15K [Table file]
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