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VIMOS trending system: HEALTH CHECK report
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Last update: 2014-08-23T03:36:11 (UT)
  | now: 2014-08-23T10:55:38 (UT) muc03 QC pipeline: vimos-2.9.13 (installed 2014-03-19)
same group: image_quality ellipticity   IQ_Q1 IQ_Q2 IQ_Q3 IQ_Q4
General news:
VIMOS news:  
Report news:
DATE*: [?] 2014-08-16
report | NLT
2014-08-17
report | NLT
2014-08-18
report | NLT
2014-08-19
report | NLT
2014-08-20
report | NLT
2014-08-21
report | NLT
2014-08-22
report | NLT
P...
Product quality:
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  no OPSLOG data  

scores&comments | history ... | plot tutorial ... | contact                 daily/often; important to check     [?]
*Date on this monitor changes at 21:00 UT
Print: Information and research:
- png file - advanced studies: QC1 browser | QC1 plotter
Plot
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Symb
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Source
*
OPS?
**
Average ? Thresholds ? N_
data
QC1
parameter
Data
downloads
Remarks
method value unit method value
1 QC1DB no MEDIAN 0.061 none VAL0,0.08 85 ellipticity_mean this | last_yr | all average image quality, Q2
2 QC1DB no MEDIAN 0.0463 none VAL0,0.08 82 ellipticity_mean this | last_yr | all average image quality, Q1
3 QC1DB no MEDIAN 0.0608 none VAL0,0.08 84 ellipticity_mean this | last_yr | all average image quality, Q3
4 QC1DB no MEDIAN 0.0448 none VAL0,0.08 84 ellipticity_mean this | last_yr | all average image quality, Q4
*Data sources: QC1DB: QC1 database; LOCAL: local text file | **OPS: OPSLOG data are included
Plot 1
scores: 7|
data source:vimos_mask2ccd
(QC1 database)
dataset:ellipticity_mean
median:0.061none
fixed thresholds:0...0.08none
N_data plotted:85
[click on plot for closeup]
Plot 2
scores: 7|
data source:vimos_mask2ccd
(QC1 database)
dataset:ellipticity_mean
median:0.0463none
fixed thresholds:0...0.08none
N_data plotted:82
[click on plot for closeup]
Plot 3
scores: 7|
data source:vimos_mask2ccd
(QC1 database)
dataset:ellipticity_mean
median:0.0608none
fixed thresholds:0...0.08none
N_data plotted:84
[click on plot for closeup]
Plot 4
scores: 7|
data source:vimos_mask2ccd
(QC1 database)
dataset:ellipticity_mean
median:0.0448none
fixed thresholds:0...0.08none
N_data plotted:84
[click on plot for closeup]
This plot

Trending plots for monitoring the VIMOS focus.

The daily focus check is performed on the same data that is measured to determine the mask to CCD coefficients. SExtractor is called to determine image quality (in pixels), ellipticity, and orientation of the pinhole images. There are two plots that show the mean values for each quadrant for image quality and ellipticity and four plots with the image quality in the centre and the corners of each quadrant.

The image quality is measured as the FWHM of the major axis of the pinhole ellipse. Please note that the mask to CCD calibrations are only measured once per day. Any change of the focus quality during the night cannot be seen. Science data should still be examined carefully in order to ensure nominal image quality.

Scoring is enabled only for averaged image quality, averaged ellipticity, and for the image quality in cell 5 (centre of each quadrant).

Especially for Q2 and Q3, ellipticity seems to be temperature dependent.

Template ID: img_tec_MaskToCcd. Pipeline recipe: vmmasktoccd (requires pipeline version 2.5.5 or higher).  


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