2015-02-10: QC parameters on the slice counts ratio (from IFU HC flats) are a concern.
2015-02-09 Gain thresholds have been relaxed because of new detmon with new upper threshold of 40000 ADU. As soon as the new mean value and scatter are known, thresholds will be adapted again. [firstname.lastname@example.org]
The gain is derived from a set of paired flat fields with identical
exposure time, using the Photon Transfer Curve (PTC) method. Since
2013-08-01, flats covering the full dynamic range are taken into account,
also flats already in the non-linear regime, for which the PTC is not
corrected for. A smaller slope in the PTC results in higher gain values.
For more information see the plot
Click on any of the plots to see a close-up version.
The latest date is indicated on top of the plot.
data points belonging to the latest date are specially marked
statistical averages are indicated by a solid line, and thresholds by broken lines
outliers are marked by a red asterisk. They are defined as data points outside the
"aliens" (= data points outside the plot Y limits) are marked by a red arrow (↑ or ↓)
you can download the data for each parameter set if the 'Data downloads' link shows up