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FORS2 trending system: HISTORY plot
Last update: 2009-04-11T23:50:27 (UT)
same group: med_master ron_raw ron_master fp_raw struct_raw pattern
close window history: 2002 2003 2004 2005 2006 2007 2008   2009   2010   2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024   HEALTH
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*Date on this monitor changes at 21:00 UT
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Plot
?		 Symb
?		 Source
*		 Average ? Thresholds ? N_
data		 QC1
parameter		 Data
downloads		 Remarks
method value unit method value
1 •QC1DB MEDIAN 201.67 ADU VAL200,220 68 median_master this | last_yr | all 100Kps/2ports/high_gain, 2x2
2 •QC1DB MEDIAN 219.33 ADU 5%± 10.9665 57 median_master this | last_yr | all 200Kps/2ports/low_gain, 2x2
3 xQC1DB MEDIAN 13.0 degree VAL0,20 159 ins_focus_temp this | last_yr | all Temperature at Instrument Focus
4 •QC1DB MEDIAN 188.67 ADU VAL200,222 68 median_master this | last_yr | all 100Kps/2ports/high_gain, 2x2
5 •QC1DB MEDIAN 201.67 ADU VAL202,224 57 median_master this | last_yr | all 200Kps/2ports/low_gain, 2x2
6 xQC1DB MEDIAN 13.0 degree VAL0,20 159 ins_focus_temp this | last_yr | all Temperature at Instrument Focus
*Data sources: QC1DB: QC1 database; LOCAL: local text file
This plot

The bias level (in ADU) is evaluated as the median value of all pixels in the master bias. As of 2015-04-22 the bias level is given after offset (overscan) subtraction (change after adopting new pipeline v.5). The trending is done for 2x2 binning only. The bottom pannels show temperature in the focus of the instrument, read from the Chip1 and Chip2 data files. This is to trace any possible correlation of the bias level with temperature. Details can be found in the plot tutorial.

DB Name: fors2_bias
TPL.ID: img_cal_bias
Fits header keyword: QC.MBIAS.LEVEL
QC1 DB parameter: median_master

 
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