QC PLOTS
	CURRENT	HISTORY
Daily Health Checks:
MOS FMTCHK GratPos PhysM 520 P1 DHC
MOS FMTCHK GratPos PhysM 580 P1 DHC
MOS FMTCHK GratPos PhysM 860 P1 DHC
MOS FMTCHK GratPos PhysM 520 P2 DHC
MOS FMTCHK GratPos PhysM 580 P2 DHC
MOS FMTCHK GratPos PhysM 860 P2 DHC
QC1 uves_fib_fmtchk 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 MOS - Grating Position Health Check trending.
The MOS - Grating Position trending is based on the measurement of QC1 parameters of FORMAT CHECK calibration data obtained with dedicated Health Check OBs executed daily. These OBs obtain three sets of MOS FORMAT CHECK data, 1 set in each of the three wavelength settings available in MOS mode (520.0, 580.0 and 860.0nm), each set comprising a single RAW frame. Only one of the OZ-POS plates is used (Plate-1).
FMTCHK data for the three wavelength settings using Plate-2 are also trended whenever these data are acquired accoridng to the CAlibration Plan.

QC1 parameters

• difference of X positions to physical model (QC1 database table uves_fib_fmtchk, column mean_dx, product keyword QC.MODEL.DIFFXAVG)
  Description: The physical model used in Formatcheck step allows to measure the difference between model predicted and detected line positions. This is useful to verify precision of physical model prediction and instrument spectral format stability.
• difference of Y positions to physical model (QC1 database table uves_fib_fmtchk, column mean_dy, product keyword QC.MODEL.DIFFYAVG)
  Description: The physical model used in Formatcheck step allows to measure the difference between model predicted and detected line positions. This is useful to verify precision of physical model prediction and instrument spectral format stability.
• number of lines selected (QC1 database table uves_fib_fmtchk, column nlin_sel, product keyword QC.MODEL.NLINSEL)
  Description: The physical model used in the Formatcheck step allows to predict line positions on the formatcheck frame. The selected number of lines is the subset of the total number of lines which fall in the physical model plot limits.

QC1 parameters

• difference of X positions to physical model (QC1 database table uves_fmtchk, column mean_dx, product keyword QC.MODEL.DIFFXAVG)
  Description: The physical model used in Formatcheck step allows to measure the difference between model predicted and detected line positions. This is useful to verify precision of physical model prediction and instrument spectral format stability.
• difference of Y positions to physical model (QC1 database table uves_fmtchk, column mean_dy, product keyword QC.MODEL.DIFFYAVG)
  Description: The physical model used in Formatcheck step allows to measure the difference between model predicted and detected line positions. This is useful to verify precision of physical model prediction and instrument spectral format stability.
• number of lines selected (QC1 database table uves_fmtchk, column nlin_sel, product keyword QC.MODEL.NLINSEL)
  Description: The physical model used in the Formatcheck step allows to predict line positions on the formatcheck frame. The selected number of lines is the subset of the total number of lines which fall in the physical model plot limits.