setup used for monitoring is: 100k/1pt/hg read mode, 1.0x11 slit and  1x1 binning</font><p><font size="2">

D2 lamp is monitored via flux1 QC parameters <br>
QTH lamp is monitored via flux2 QC parameters <br>
</font><p><font size="2">
Arguments for upper threshold of 60000 ADU: 
<ul>
<li>The flat field lamp fluctuations within a set of five raw frames can be +- 1000 ADU.
<li>When the counts QC parameter reaches 63000 ADU the first hot pixel begin to saturate.
<li>The UVB-arm detector is linear ( < 0.01) up to the saturation level of 65535 ADU.
</ul>