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FORS2 trending system: KPI report
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Last update: 2025-09-10T16:25:04 (UT)
  | now: 2025-09-10T16:33:17 (UT) muc01 QC pipeline: fors-5.8.3 (installed 2025-05-12)
General news: NOTE: The Health Check and calChecker services are moved to qcFlow on an instrument by instrument basis. The current pages will not be updated any longer once the move has been finished.
FORS2 news:  
Report news:

scores&comments | history: all data plotted here | plot tutorial ... | contact | HC_docu...               [?] 		*Date on this monitor changes at 21:00 UT
png: Information and research:
- png file - advanced studies: QC1 browser | QC1 plotter
Plot
?		 Symb
?		 Source
*		 Average ? Thresholds ? N_
data		 QC1
parameter		 Data
downloads		 Remarks
method value unit method value
1 •QC1DB none   NONE none  72 non_linear all (full time range) non-linearity for chip 1, high gain, R_SPECIAL
1 •QC1DB none   NONE none  224 non_linear all (full time range) non-linearity for chip 1, high gain, non-R_SPECIAL
1 oQC1DB none   NONE none  296 non_linear all (full time range) non-linearity for chip 1, high gain, all filters
2 •QC1DB none   NONE none  71 non_linear all (full time range) non-linearity for chip 2, high gain, R_SPECIAL
2 •QC1DB none   NONE none  221 non_linear all (full time range) non-linearity for chip 2, high gain, non-R_SPECIAL
2 oQC1DB none   NONE none  292 non_linear all (full time range) non-linearity for chip 2, high gain, all filters
3 •QC1DB none   NONE none  73 non_linear all (full time range) non-linearity for chip 1, low gain, R_SPECIAL
3 •QC1DB none   NONE none  273 non_linear all (full time range) non-linearity for chip 1, low gain, non-R_SPECIAL
3 oQC1DB none   NONE none  346 non_linear all (full time range) non-linearity for chip 1, low gain, all filters
4 •QC1DB none   NONE none  73 non_linear all (full time range) non-linearity for chip 2, low gain, R_SPECIAL
4 •QC1DB none   NONE none  270 non_linear all (full time range) non-linearity for chip 2, low gain, non-R_SPECIAL
4 oQC1DB none   NONE none  343 non_linear all (full time range) non-linearity for chip 2, low gain, all filters
*Data sources: QC1DB: QC1 database; LOCAL: local data source
Plot 1
data source:fors2_detmon
(QC1 database)
dataset:
(numbers below apply to this dataset)		non_linear•
average:none
thresholds:none
N_data plotted:72
(current) reference:0.0025
[click plot for closeup]
Plot 2
data source:fors2_detmon
(QC1 database)
dataset:
(numbers below apply to this dataset)		non_linear•
average:none
thresholds:none
N_data plotted:71
(current) reference:0.0051
[click plot for closeup]
Plot 3
data source:fors2_detmon
(QC1 database)
dataset:
(numbers below apply to this dataset)		non_linear•
average:none
thresholds:none
N_data plotted:73
(current) reference:0.0064
[click plot for closeup]
Plot 4
data source:fors2_detmon
(QC1 database)
dataset:
(numbers below apply to this dataset)		non_linear•
average:none
thresholds:none
N_data plotted:73
(current) reference:0.0094
[click plot for closeup]
This plot

This is the instrument performance plot showing deviation from linearity calculated for two MIT detectors of FORS2 (Chip1 and Chip2) in two different read-out modes (High- and Low-gain). We monitor here a difference, at a given ref_level, between the flux obtained from 2nd order polynomial fit of flux vs. exposure time and the flux predicted by the linear term only, normalized by the polynomial flux.

Since data taken after 2009-10 rarely reach 60000 ADU we changed this ref_level from 60000 ADU to 40000 ADU, starting 2009-10.

The respective reference values are currently identical to the average of measured data points.

More information can be found on the plot tutorial page  

General information

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

The latest date is indicated on top of the plot.

If configured,

  • data points belonging to the latest date are specially marked
  • 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