CRIRES trending system: HISTORY plot
Last update: 2008-04-13T03:34:06 (UT)
same group: xcorr ThAr N2O DISP RESOL   AVG
close window history: 2007   2008   2009   2010 2011 2012   HEALTH
  ... ... ...
*Date on this monitor changes at 21:00 UT
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Plot
[info]		 Symbol
[info]		 Source* Average [info] Thresholds [info] N_data Data downloads Remarks
method value unit method value
1 •QC1DB MEDIAN   NONE 3SIG± 0.00000 0 this | last_yr | all xcorr, chip 1, WREF=1090.4
2 •QC1DB MEDIAN 0.50329 NONE 3SIG± 0.34949 101 this | last_yr | all xcorr, chip 2, WREF=1090.4
3 •QC1DB MEDIAN 0.94991 NONE 3SIG± 0.05004 101 this | last_yr | all xcorr, chip 3, WREF=1090.4
4 •QC1DB MEDIAN   NONE 3SIG± 0.00000 0 this | last_yr | all xcorr, chip 4, WREF=1090.4
5 •QC1DB MEDIAN 0.87621 NONE 3SIG± 0.05777 79 this | last_yr | all xcorr, chip 1, WREF=4092.9
6 •QC1DB MEDIAN 0.83051 NONE 3SIG± 0.03599 79 this | last_yr | all xcorr, chip 2, WREF=4092.9
7 •QC1DB MEDIAN 0.80086 NONE 3SIG± 0.01571 79 this | last_yr | all xcorr, chip 3, WREF=4092.9
8 •QC1DB MEDIAN 0.79046 NONE 3SIG± 0.48828 79 this | last_yr | all xcorr, chip 4, WREF=4092.9
*Data sources: QC1DB: QC1 database; LOCAL: local text file
This plot

Wavelength calibration: trending of cross correlation results.

The cross correlation result is a unitless number between 0 and 1. Values above 0.2 are regarded as acceptable. For lower values, the CRIRES pipeline disregards the result and returns -1. Such values are marked as "aliens" (red arrows) in the plots.

The cross correlation results are monitored for the two daily health check settings with reference wavelength (on chip 3) of 1090.4nm using ThAr lamp and 4092.9nm using N2O absorption cell.

Chips 1 and 4 of the 1090.4 nm setting suffer from vignetting. Pipeline results are arbitrary and are not plotted.

Pipeline processing in Garching applies dark subtraction and flat-fielding. This can result in better cross-correlation values, especially for chip 2 (1090.4 nm) and chip 4 (4092.9 nm) where Paranal results are not displayed.  

General information

Click on any of the plots to see a close-up version. The latest date is indicated on top of the plot, data points belonging to that date are specially marked.

If configured,

  • 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