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Last update: 2022-10-03T16:25:17 (UT)
  | now: 2022-10-03T17:15:41 (UT) muc02 QC pipeline: xshoo-3.6.0 (installed 2022-03-21)
same group: flat_HC_IFU slice_rms   flat_IFU flat_SLIT arc_lamp spectrum SLIT stdev
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DATE*: [?] 2022-09-26
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2022-09-30
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2022-10-01
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*Date on this monitor changes at 21:00 UT
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- 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 0.00272 ADU VAL-0.001,0.005 215 raw_med_std this | last_yr | all The standard deviation over a sample of five raw frame median counts. This QC parameter is sensitive to fluctuations in the illumination level.
2 QC1DB MEDIAN 0.00302 ADU none  215 raw_mean_std this | last_yr | all The standard deviation over a sample of five raw frame mean counts. This QC parameter is sensitive to fluctuations in the illumination level.
3 QC1DB MEDAIN   ADU none  215 raw_max_std this | last_yr | all The standard deviation over a sample of five raw frame maximum counts. This QC parameter is sensitive to fluctuations in the illumination level and/or to fluctuations of the jnumber of bad pixel.
4 QC1DB MEDIAN 2e+05 ADU none  215 raw_max_avg this | last_yr | all The maximum over a sample of five raw frame maximum counts. This QC parameter is sensitive if only frame of the sample saturates or has more counts.
*Data sources: QC1DB: QC1 database; LOCAL: local data source
Plot 1
scores: not implemented
data source:xshooter_flat
(QC1 database)
dataset:raw_med_std
median:0.00272ADU
fixed thresholds:-0.001...0.005ADU
N_data plotted:215
[click plot for closeup]
Plot 2
scores: not implemented
data source:xshooter_flat
(QC1 database)
dataset:raw_mean_std
median:0.00302ADU
thresholds:none 
N_data plotted:215
[click plot for closeup]
Plot 3
scores: not implemented
data source:xshooter_flat
(QC1 database)
dataset:raw_max_std
median:0.00302ADU
thresholds:none 
N_data plotted:215
[click plot for closeup]
Plot 4
scores: not implemented
data source:xshooter_flat
(QC1 database)
dataset:raw_max_avg
median:2e+05ADU
thresholds:none 
N_data plotted:215
[click plot for closeup]
This plot

Since 2018-03, VIS-arm flat frames are subject of fluctuations of the illumination level within the sequence of five raw frames. One ore more raw frames can show brighter flats than the remaing raw flats of the sequence. Brighter instances of raw flats can be partially saturated.

The most sensitive QC parameter is the standard deviation of the raw frame median counts (here plot (1) ).  


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