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Health Check monitor

 

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GIRAFFE trending system: HEALTH CHECK report
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Last update: 2024-11-22T16:36:57 (UT)
  | now: 2024-11-22T18:54:52 (UT) muc02 QC pipeline: giraf-2.16.14 (installed 2024-10-16)
same group: Health   all_FLATs per_WLN
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.
GIRAFFE news:  
Report news:
DATE*: [?] 2024-11-15
report | NLT
2024-11-16
report | NLT
2024-11-17
report | NLT
2024-11-18
report | NLT
2024-11-19
report | NLT
2024-11-20
report | NLT
2024-11-21
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
- efficiency curves for Medusa settings
- current fibre pattern
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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 none   counts VAL2000,19000 70 mean_raw this | last_yr | all Flat field level, all Medusa1 settings, 'Normal' read mode only
1 QC1DB none   counts none  40 mean_raw this | last_yr | all     L543.1 only (for reference)
2 +QC1DB none   counts VAL2000,19000 58 mean_raw this | last_yr | all as plot 1, Medusa2
2 +QC1DB none   counts none  25 mean_raw this | last_yr | all     L543.1 only (for reference)
4 QC1DB none   counts VAL2000,24000 20 mean_raw this | last_yr | all as plot 1, IFU1
4 QC1DB none   counts none  12 mean_raw this | last_yr | all     L543.1 only (for reference)
5 QC1DB none   counts VAL2000,24000 18 mean_raw this | last_yr | all as plot 1, IFU2
5 QC1DB none   counts none  13 mean_raw this | last_yr | all     L543.1 only (for reference)
6 QC1DB none   counts VAL2000,24000 33 mean_raw this | last_yr | all as plot 1, Argus
6 QC1DB none   counts none  14 mean_raw this | last_yr | all     L543.1 only (for reference)
*Data sources: QC1DB: QC1 database; LOCAL: local data source
Plot 1
scores: 4|
data source:giraffe_flat
(QC1 database)
dataset:
(numbers below apply to this dataset)
mean_raw
average:none
fixed thresholds:2000...19000counts
N_data plotted:70
[click plot for closeup]
Plot 2
scores: 3|
data source:giraffe_flat
(QC1 database)
dataset:
(numbers below apply to this dataset)
mean_raw+
average:none
fixed thresholds:2000...19000counts
N_data plotted:58
[click plot for closeup]
Plot 4
scores: 2|
data source:giraffe_flat
(QC1 database)
dataset:
(numbers below apply to this dataset)
mean_raw
average:none
fixed thresholds:2000...24000counts
N_data plotted:20
[click plot for closeup]
Plot 5
scores: 2|
data source:giraffe_flat
(QC1 database)
dataset:
(numbers below apply to this dataset)
mean_raw
average:none
fixed thresholds:2000...24000counts
N_data plotted:18
[click plot for closeup]
Plot 6
scores: 7|
data source:giraffe_flat
(QC1 database)
dataset:
(numbers below apply to this dataset)
mean_raw
average:none
fixed thresholds:2000...24000counts
N_data plotted:33
[click plot for closeup]
This plot

This is the Health Check plot for the signal level in the GIRAFFE flat field calibration data. We display the QC1 parameter mean_raw (QC.OUT1.MEAN.RAW) of the first input raw frame. This plot monitors all setups for the 'normal' read mode. Check the "per_WLN" plot for the same data set, plotted over wavelength.

The purpose of this plot is to guarantee that all flat field calibration data have an exposure level which is good enough to record the pixel-to-pixel gain variations.

For reference, the data from the Health Check setting L543.1 are highlighted. You can study them separately in the "HEALTH" plot of this group.

Data from other read modes ('Slow' and 'Fast') are not trended here. These setups are rarely used and the trending plots would be sparsely populated.

The data are checked against upper and lower limits. The lower limit is the most important one. From the CCD trending plot (no. 1), it follows that a single flat must have a minimum flux level of roughly 20.000 ADU at the fibre peak, in order to be dominated by the pixel-to-pixel gain pattern rather than by photon noise. From the topology of the flat frame signal, it follows a corresponding mean_raw value of about 7000 ADU. Assuming three input flats creating a single master fiber flat, we derive an approximate lower limit of 2000 ADU. This value is marked as lower threshold in the plots.

In the same way, the IFU flats require about 3000 ADUs on average.

The upper limit is derived from the saturation limit.

Note: All blue setups (below about 400 nm) may score red since their mean raw flux is rather low, often below the thresholds. This is usually not an issue since it is compensated by an increased number of raw files.  


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