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UVES Quality Control:
Fibre_Lamps

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QUALITY CONTROL
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UVES QC
Trending & QC1
   MOS - Lamps
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QC links:
FFLAT: Relative transmission | ThAr: Line intensity per fibre | Fibre system: stability
QC PLOTS
  CURRENT HISTORY
Daily Health Checks:    
MOS LAMPS stability FF REDL 580
(scored)
REDU (unscored)
ThAr REDL 580 (scored)
REDU(unscored)
MOS fibre stability FF REDU 580 Plate1
Plate 2
QC1 uves_fib_fflat database (advanced users): browse | plot
uves_fib_wave: browse | plot
   Click on CURRENT to see the last trending (Health Check).
   Click on HISTORY to see the historical evolution of the trending.

top Introduction

The monitoring of the MOS calibration lamps is based on FIBRE (MOS) FLAT and WAVE calibration data. These data come in the 7+1 Fibre mode, 580 nm MOS setting using Plate 1. QC1 parameters for all eight fibres are collected and monitored, but only fibre 4 is used for scoring.

top QC1 parameters: Relative transmission

relative transmission (ADU/sec) of fibre (QC1 database table uves_fib_fflat, column fib_effic_rel, product keyword QC.FIBi.RELTRANS) where i is 1...8
average transmission measured on each fibre

This parameter monitors both the FLAT calibration lamp performance (which however is already monitored with the Echelle flats) and the fibre transmission. The first plot records the SIMCAL fibre, while the others monitor the target fibres (2-8). The signal in fibre 4 is also used for scoring. If all but one fibre show a signal from the lamp, a fibre with low or no signal has clearly a problem.

The REDL report is scored (in fibre #4), the REDU report is also provided but not scored (to avoid redundant alerts).

top QC1 Parameters: Line intensity per fibre

QC1 parameters

average intensity of ThAr lines (divided by EXPTIME) (QC1 database table uves_fib_wave, column int_avg, product keyword QC.INTAVG)

To monitor ThAr intensity we measure the average intensity of a selected line list. As before, the fibre #1 records the SIMCAL lamp, while fibres #2-8 record the object fibres. The signal in fibre 4 is also used for scoring.

The REDL report is scored (in fibre #4), the REDU report is also provided but not scored (to avoid redundant alerts).

top QC1 Parameters: relative transmission per fibre

This plot repeats information from the fibre flat report but is focussing on the fibres #2...#9 from both plates. Thereby it monitors the complete FLAMES/UVES fibre system.


 
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