Filename                               Reason     Bkg         V      RCAM      TCAM   Sigma
20220612.232918.ucomp.789.l1.3.fts          0    14.8      1.41       0.0       0.0    0.73
20220612.233149.ucomp.789.l1.3.fts          0    14.7      1.36       0.1       0.1    0.79
20220612.235749.ucomp.789.l1.3.fts          0    14.6      1.37       0.1       0.1    0.66
20220613.000021.ucomp.789.l1.3.fts          0    14.6      1.38       0.0       0.0    0.69
20220613.002527.ucomp.789.l1.3.fts          0    14.6      1.39       0.0       0.0    0.66
20220613.002758.ucomp.789.l1.3.fts          0    14.6      1.38       0.0       0.0    0.69
20220613.021830.ucomp.789.l1.3.fts          0    15.1      1.36       0.1       0.0    0.65
20220613.022101.ucomp.789.l1.3.fts          0    15.1      1.40       0.1       0.0    0.65
20220613.030136.ucomp.789.l1.3.fts          0    15.6      1.44       0.1       0.0    0.72
20220613.030407.ucomp.789.l1.3.fts          0    15.7      1.42       0.1       0.0    0.71
20220613.032904.ucomp.789.l1.3.fts          0    16.5      1.53       0.1       0.1    0.82
20220613.033135.ucomp.789.l1.3.fts          0    16.6      1.54       0.1       0.1    0.76
20220613.035632.ucomp.789.l1.3.fts          0    17.0      1.64       0.1       0.1    0.82
20220613.035903.ucomp.789.l1.3.fts          0    17.1      1.66       0.1       0.1    0.75

GBU bitmask codes
Code    Description
    1   spar guide control loop is below threshold (0.99)
    2   spar guider intensity below threshold (0.9 * 9.256 * exp(-0.05 * secz))
    4   median background is above threshold (35.0)
    8   median background is below threshold (5.0)
   16   spurious Stokes V signal is above threshold (8.0)
   32   the chi-squared of the occulter fit is above threshold (400.0)
   64   the difference of the image with the median is above threshold (1.5)

* indicates that the threshold values changed on the day