QC PLOTS
	CURRENT	HISTORY
Daily Health Checks:
GAIN
LINEFF
QC1 hawki_detlin database (advanced users): browse | plot
Click on CURRENT to see the last trending (Health Check).    Click on HISTORY to see the historical evolution of the trending.

This tutorial provides information for the the Detector: monitoring Health Check trending.
The Detector: monitoring trending is based on the measurement of QC1 parameters of Detector Linearity calibration data obtained with a dedicated Health Check OB executed approximately monthly.
The Detector Linearity OB obtains 1 set of DARK and Imaging FLAT FIELD data comprised of ten pairs of FLATS with DITs selected for each pair to sample the full well potential of the detector and ten pairs of DARK frames with DITs matching the FLATs.
The effective linearity and the gain of each detector are monitored.

QC1 parameters

• conversion factor or gain [ e-/ADU ] (QC1 database table hawki_detlin, column qc_conad, product keyword QC.CONAD)
  
• effective linearity (QC1 database table hawki_detlin, column qc_lin_eff, product keyword QC.LIN.EFF)