This plot monitors the instrumental issue: ZIMPOL shutter.
This plot shows a QC parameter which measures if all planes of the raw frame
data cube are illuminated (low rms over the plane medians) or not (high rms over the plane medians).
The issue is monitored for FastPolarimetry and SlowPolarimetry readmode and
for both camera, which should react syncroneously.
The issue started on 2016-05-01 and was fixed on 2016-06-01.
More details on the issue can be found on the SPHERE problems page (see
navigation bar) or on the plot tutorial page.
General information
Click on any of the plots to see a close-up version.
The latest date is indicated on top of the plot.
If configured,
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
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
