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Health Check monitor


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GIRAFFE trending system: HEALTH CHECK report
Last update: 2024-07-20T04:35:57 (UT)
  | now: 2024-07-20T09:21:04 (UT) muc02 QC pipeline: giraf-2.16.10 (installed 2023-06-22)
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.
The links to KMOS, UVES, and ESPRESSO have been moved to a new section (qcFlow operational) at the lower part of the navigation bar.
GIRAFFE news:  
Report news:
DATE*: [?] 2024-07-13
report | NLT
report | NLT
report | NLT
report | NLT
report | NLT
report | NLT
no data | NLT
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scores&comments | history ... | plot tutorial ... | contact | HC_docu... | quality events...                 daily/often; important to check     [?]
*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
- reference flats
Average ? Thresholds ? N_
method value unit method value
1 QC1DB MEDIAN 4.96e+03 counts VAL2000,15000 47 mean_raw this | last_yr | all Flat field level, L543.1 setting, 'Normal' read mode; Medusa1
2 +QC1DB MEDIAN 4.88e+03 counts VAL2000,15000 49 mean_raw this | last_yr | all as plot 1, Medusa2
4 QC1DB MEDIAN 4.83e+03 counts VAL3000,24000 14 mean_raw this | last_yr | all as plot 1, IFU1
5 QC1DB MEDIAN 4.99e+03 counts VAL3000,24000 13 mean_raw this | last_yr | all as plot 1, IFU2
6 QC1DB MEDIAN 3.96e+03 counts VAL3000,24000 14 mean_raw this | last_yr | all as plot 1, Argus
*Data sources: QC1DB: QC1 database; LOCAL: local data source
Plot 1
scores: 6|
data source:giraffe_flat
(QC1 database)
fixed thresholds:2000...15000counts
N_data plotted:47
[click plot for closeup]
Plot 2
scores: 6|
data source:giraffe_flat
(QC1 database)
fixed thresholds:2000...15000counts
N_data plotted:49
[click plot for closeup]
Plot 4
scores: 2|
data source:giraffe_flat
(QC1 database)
fixed thresholds:3000...24000counts
N_data plotted:14
[click plot for closeup]
Plot 5
scores: 1|
data source:giraffe_flat
(QC1 database)
fixed thresholds:3000...24000counts
N_data plotted:13
[click plot for closeup]
Plot 6
scores: 1|
data source:giraffe_flat
(QC1 database)
fixed thresholds:3000...24000counts
N_data plotted:14
[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 the L543.1 HC flat data only.

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.

Check the other plots of this group for data from any measured flat field, sorted over time ("ALL") or over wavelength ("per WLN").

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 plot.

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

The upper limit is derived from the saturation limit.  

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