Filename                               Reason     Bkg         V      RCAM      TCAM   Sigma
20220612.234054.ucomp.1079.l1.3.fts         0    11.4      0.22       0.0       0.0    0.72
20220612.234325.ucomp.1079.l1.3.fts         0    11.3      0.22       0.0       0.0    0.75
20220613.000820.ucomp.1079.l1.3.fts         0    11.3      0.24       0.0       0.0    0.70
20220613.001051.ucomp.1079.l1.3.fts         0    11.3      0.24       0.0       0.0    0.92
20220613.003558.ucomp.1079.l1.3.fts         0    11.2      0.23       0.0       0.0    0.66
20220613.003829.ucomp.1079.l1.3.fts         0    11.2      0.23       0.0       0.0    0.68
20220613.022911.ucomp.1079.l1.3.fts         0    11.4      0.21       0.0       0.0    0.70
20220613.023142.ucomp.1079.l1.3.fts         0    11.4      0.22       0.0       0.0    0.66
20220613.031207.ucomp.1079.l1.3.fts         0    11.9      0.24       0.0       0.0    0.86
20220613.031438.ucomp.1079.l1.3.fts         0    12.0      0.25       0.0       0.0    0.88
20220613.033935.ucomp.1079.l1.3.fts        64    12.4      0.23       0.0       0.0    1.61
20220613.034206.ucomp.1079.l1.3.fts        64    12.4      0.23       0.0       0.0    1.55
20220613.040703.ucomp.1079.l1.3.fts         0    13.1      0.24       0.0       0.0    1.28
20220613.040934.ucomp.1079.l1.3.fts         0    13.0      0.24       0.0       0.0    1.15

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 (80.0)
   64   the difference of the image with the median is above threshold (1.5)

* indicates that the threshold values changed on the day