*Data sources: QC1DB: QC1 database; LOCAL: local text file | **OPS: to indicate if OPSLOG data are included
This plot
The trended efficiency is the median raw signal devided by exposure
time. The median value is computed within a window 250x150 pixel
chosen close to the gap region between the 2 CCDs to minimize the
illumination gradient. This is only a nominal 'efficiency' actually
measuring the stability of exposure level (influenced by e.g. aging of
lamps etc.).
General information
Click on any of the plots to see a close-up version.
If applicable, the 20 latest values from Paranal ops logs are plotted as blue dots.
The latest date is indicated on top of the plot, data points belonging to that date are specially marked.
If configured,
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
threshold lines
"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
