QA.TXT: QUALITY ASSURANCE ANCILLARY DATA FILE 

This file contains quality assurance parameters for the survey image. 

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Data Take ID:                      172.21
Site Name:                         Siwa/Largeau, Sahara  Chad     
Site ID:                           GS7

Product Type:                                     Survey Image
Carrier Frequency (GHz):                          1.254
Polarization Channel:                             HH
Number of Q/A Intervals:                          2
Bit Error Rate, PRF-C (exp):                      0.0
Number of Flywheels:                              0
Turn-On Recv Only Noise Power (dBmW):             0.0
Turn-Off Recv Only Noise Power (dBmW):            0.0
Turn-On Ambiguity Resolution Probability:         0.00
Turn-Off Ambiguity Resolution Probability:        0.00
Survey fd Error (Hz):                             0.0

Q/A Interval Data:

Interval  1

  Mean of Raw Data Histogram:                     127.8
  Standard Deviation of Raw Data Histogram:       9.7
  % Over Saturation in Raw Data Histogram:        0.0
  % Under Saturation in Raw Data Histogram:       0.0
  Range Offset in Frequency Domain (MHz):         4.22
  Signal-to-Noise Ratio (dB):                     100.00
  Spurious Peak Count:                            0
  DWP for Echo Monitor Plot (micro sec):          0.00
  Caltone Gain (dBmW):                            -90.17
  Caltone Phase (deg):                            -173.87
  Mean of Image Histogram:                        
                                  Near Range:     99.70
                                Center Swath:     96.09
                                   Far Range:     96.13
  Standard Deviation of Image Histogram:          
                                  Near Range:     42.47
                                Center Swath:     39.53
                                   Far Range:     46.75
  % Over Saturation in Image Histogram:           
                                  Near Range:     0.00
                                Center Swath:     0.00
                                   Far Range:     0.01
  % Under Saturation in Image Histogram:          
                                  Near Range:     0.00
                                Center Swath:     0.00
                                   Far Range:     0.00

Interval  2

  Mean of Raw Data Histogram:                     127.8
  Standard Deviation of Raw Data Histogram:       20.4
  % Over Saturation in Raw Data Histogram:        0.0
  % Under Saturation in Raw Data Histogram:       0.0
  Range Offset in Frequency Domain (MHz):         4.22
  Signal-to-Noise Ratio (dB):                     4.24
  Spurious Peak Count:                            0
  DWP for Echo Monitor Plot (micro sec):          0.00
  Caltone Gain (dBmW):                            -83.38
  Caltone Phase (deg):                            -174.34
  Mean of Image Histogram:                        
                                  Near Range:     111.23
                                Center Swath:     137.02
                                   Far Range:     116.67
  Standard Deviation of Image Histogram:          
                                  Near Range:     56.35
                                Center Swath:     70.14
                                   Far Range:     66.94
  % Over Saturation in Image Histogram:           
                                  Near Range:     0.03
                                Center Swath:     0.15
                                   Far Range:     0.12
  % Under Saturation in Image Histogram:          
                                  Near Range:     0.04
                                Center Swath:     0.00
                                   Far Range:     0.01