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Health Check monitor

 

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OMEGACAM:
linearity
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OMEGACAM trending system: HEALTH CHECK report
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Last update: 2026-04-17T16:04:07 (UT)
  | now: 2026-04-17T16:10:25 (UT) muc06 QC pipeline: omega-1.1.9 (installed 2024-07-29)
same group: non-linearity   num_NL_pixels linearity_minmax FP_noise
General news: NOTE: The Health Check and calChecker services have been moved to qcFlow. These pages are only maintained for comparison and will be removed in 2026.
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DATE*: [?] 2026-04-10
report | NLT
2026-04-11
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2026-04-13
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2026-04-14
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report | NLT
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*Date on this monitor changes at 21:00 UT
png: Information and research:
- png file - advanced studies: QC1 browser | QC1 plotter
Plot
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Symb
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Source
*
Average ? Thresholds ? N_
data
QC1
parameter
Data
downloads
Remarks
method value unit method value
1 QC1DB MEDIAN 360 ADU VAL0.,500 12 qc_num_bpm this | last_yr | all number of non-linear pixels averaged over all 32 detectors
2 QC1DB MEDIAN 21.5 ADU VAL0.,3000 322 qc_num_bpm this | last_yr | all number of non-linear pixels for each individual detector
3 LOCAL none   none none  405 det_id n/a score per detector:
GREEN = within the thresholds
3 LOCAL none   none none  0 det_id n/a score per detector:
RED = beyond the thresholds
*Data sources: QC1DB: QC1 database; LOCAL: local data source
Plot 1
scores: not implemented
data source:omegacam_detlin
(QC1 database)
dataset:qc_num_bpm
median:360ADU
fixed thresholds:0.0...500ADU
N_data plotted:12
[click plot for closeup]
Plot 2
scores: not implemented
data source:omegacam_detlin
(QC1 database)
dataset:qc_num_bpm
median:21.5ADU
fixed thresholds:0.0...3000ADU
N_data plotted:322
[click plot for closeup]
Plot 3
scores: not implemented
data source:local data source
dataset:
(numbers below apply to this dataset)
det_id
average:none
thresholds:none
N_data plotted:405
[click plot for closeup]
This plot

Trending plots for the detector linearity (number of non-linear pixels found).

QC parameters are derived from each of 32 detectors of OmegaCAM dome flat frames.

DB Name: omegacam_detlin
Fits header: QC.NUM.BPM
QC1 DB: qc_num_bpm

Description:
The number of non-linear pixels as measured from the detector monitoring pipeline product BP_MAP_NL

Setup:
BIN.X / BIN.Y / READ.MODE / READ.SPEED = 1/1/normal/normal

These Health Check plots describe:
Fig. 1 non-linearity_AVG: The effective non-linearity correction averaged over all 32 detectors. This plot is sensitive to any changes common to all detectors.
Fig. 2 non-linearity_ALL: The effective non-linearity correction for each individual detector. This plot is sensitive changes in individual detectors.
Fig. 3 flux_level_AVG: The flux level at which the effective non-linearity correction is applied averaged over all 32 detectors (ADU).
Fig. 4 score_outliers: Scores of the effective non-linearity correction as measured for each of the 32 detectors.
Green = within the defined thresholds.
Red = beyond the defined thresholds.


OmegaCAM detector plane layout (detector_ID locations):
OmegaCAM detector layout

 
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