QC PLOTS
	LAST	HISTORY
dark current (since 2007-04-01)
dark current (until 2007-03-25)
QC1 database (advanced users): browse | plot
Click on CURRENT to see the current (last) trending (Health Check).    Click on HISTORY to see the historical evolution of the trending.

QC1 parameters

• dark current averaged over frame (e-/px/hr) (QC1 database table fors1_dark, column dark_avg)
  This is the median level of the master dark, normalized per pixel and hour and converted into electrons.
• error of average dark current (e-/px/hr) (QC1 database table fors1_dark, column sigma_dark_avg)
  As the error of the dark current is dominated by the read-out noise, it is calculated from the read-out noise provided in the header, scaled with the exposure time (as it is normalized to 1 hour).