VIMOS trending system: HEALTH CHECK plot
Last update: 2008-11-22T09:39:49 (UT)
now: 2008-11-22T21:02:27 (UT)
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same group: MEDIAN RMS RON   AVGLOW AVGHIGH
last OPSLOG data:
2008-11-21		 Plot: 1 2 3 4 5 6 7 8   latest_files
N_data: number of recent OPSLOG entries plotted here
N_data: 3 3 3 3 3 3 3 3 availability
close window history: 2003 2004 2005 2006 2007   2008   HEALTH FULL
  ... ... ... ...
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 IMPORTANT NOTE: scoring for VIMOS is currently being implemented. Scores are not automatically updated; they may be outdated and may not match with the plots.
Plot
?		 Symb
?		 Source
*		 OPS?
**		 Average ? Thresholds ? N_
data		 QC1
parameter		 Data
downloads		 Remarks
method value unit method value
1 •QC1DB yes (3) MEDIAN 194.0 ADU VAL192,197 70 median_master this | last_yr | all Q2, median bias, low gain
2 •QC1DB yes (3) MEDIAN 196.0 ADU VAL194,198 70 median_master this | last_yr | all Q1, median bias, low gain
3 •QC1DB yes (3) MEDIAN 188.0 ADU VAL182,195 70 median_master this | last_yr | all Q2, median bias, high gain
4 •QC1DB yes (3) MEDIAN 196.0 ADU VAL192,198 70 median_master this | last_yr | all Q1, median bias, high gain
5 •QC1DB yes (3) MEDIAN 201.0 ADU VAL194,202 70 median_master this | last_yr | all Q3, median bias, low gain
6 •QC1DB yes (3) MEDIAN 193.0 ADU VAL192,196 70 median_master this | last_yr | all Q4, median bias, low gain
7 •QC1DB yes (3) MEDIAN 208.0 ADU VAL185,210 70 median_master this | last_yr | all Q3, median bias, high gain
8 •QC1DB yes (3) MEDIAN 194.0 ADU VAL191,195 70 median_master this | last_yr | all Q4, median bias, high gain
*Data sources: QC1DB: QC1 database; LOCAL: local text file | **OPS: to indicate that OPSLOG data are included
This plot

Trending plots for bias QC parameters.

All bias parameters are measured in the central 1600x1800 pixels of the detectors. The median bias level and the rms of the master should show a stable trend without sudden jumps or increase/decrease. The read-out noise is calculated from the difference of the first two raw frames. Some outliers with high values are occasionally observed due to cosmic ray events.

Bias frames are usually measured daily during day-time. They come in two different varieties: with low gain (used for imaging) and with high gain (used to calibrate the spectroscopic modes).  

General information

Click on any of the plots to see a close-up version.

If applicable, the latest values from Paranal ops logs are plotted as blue dots. More information about those values, including a download option, is available in the OPSLOG section on top of the page.

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