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GRAVITY trending system: HEALTH CHECK report
HELP USERS-GUIDE MORE
Last update: 2017-05-16T18:28:35 (UT)
  | now: 2026-04-23T17:55:51 (UT) muc05 QC pipeline: gravity-1.0.2 (installed 2017-03-23)
same group: dark_low dark_med dark_high   bpix+gain_low bpix+gain_med bpix+gain_high acqcam
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.
GRAVITY news:  
Report news:
DATE*: [?] 2026-04-16
report | NLT 		2026-04-17
report | NLT 		2026-04-18
report | NLT 		2026-04-19
report | NLT 		2026-04-20
report | NLT 		2026-04-21
report | NLT 		2026-04-22
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scores&comments | history ... | plot tutorial ... | contact               [?] 		*Date on this monitor changes at 21:00 UT
Print: 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 MEDIAN 0 none VAL0,2 72 badpix_ft this | last_yr | all bad pixels, Fringe Tracker (FT) detector, SPLIT polarimetry
2 •QC1DB MEDIAN 295 none VAL0,350 72 badpix_sc this | last_yr | all bad pixels, Science Camera (SC) detector, SPLIT polarimetry
3 •QC1DB MEDIAN 0 none VAL0,2 38 badpix_ft this | last_yr | all bad pixels, Fringe Tracker (FT) detector, COMBINED polarimetry
4 •QC1DB MEDIAN 178 none VAL0,200 38 badpix_sc this | last_yr | all bad pixels, Science Camera (SC) detector, COMBINED polarimetry
5 •QC1DB MEDIAN 26.2 ADU/e none  72 gainmean_ft this | last_yr | all gain, Fringe Tracker (FT) detector, SPLIT polarimetry
6 •QC1DB MEDIAN 4.31 ADU/e none  72 gainmean_sc this | last_yr | all gain, Science Camera (SC) detector, SPLIT polarimetry
7 •QC1DB MEDIAN 25.5 ADU/e none  38 gainmean_ft this | last_yr | all gain, Fringe Tracker (FT) detector, COMBINED polarimetry
8 •QC1DB MEDIAN 5.46 ADU/e none  38 gainmean_sc this | last_yr | all gain, Science Camera (SC) detector, COMBINED polarimetry
*Data sources: QC1DB: QC1 database; LOCAL: local data source
Plot 1
scores: 3|
data source:gravity_p2vm
(QC1 database)
dataset:badpix_ft•
median:0none
fixed thresholds:0...2none
N_data plotted:72
[click on plot for closeup]
Plot 2
scores: 3|
data source:gravity_p2vm
(QC1 database)
dataset:badpix_sc•
median:295none
fixed thresholds:0...350none
N_data plotted:72
[click on plot for closeup]
Plot 3
scores: 4|
data source:gravity_p2vm
(QC1 database)
dataset:badpix_ft•
median:0none
fixed thresholds:0...2none
N_data plotted:38
[click on plot for closeup]
Plot 4
scores: 4|
data source:gravity_p2vm
(QC1 database)
dataset:badpix_sc•
median:178none
fixed thresholds:0...200none
N_data plotted:38
[click on plot for closeup]
Plot 5
scores: no current data
data source:gravity_p2vm
(QC1 database)
dataset:gainmean_ft•
median:26.2ADU/e
thresholds:none 
N_data plotted:72
[click on plot for closeup]
Plot 6
scores: no current data
data source:gravity_p2vm
(QC1 database)
dataset:gainmean_sc•
median:4.31ADU/e
thresholds:none 
N_data plotted:72
[click on plot for closeup]
Plot 7
scores: no current data
data source:gravity_p2vm
(QC1 database)
dataset:gainmean_ft•
median:25.5ADU/e
thresholds:none 
N_data plotted:38
[click on plot for closeup]
Plot 8
scores: no current data
data source:gravity_p2vm
(QC1 database)
dataset:gainmean_sc•
median:5.46ADU/e
thresholds:none 
N_data plotted:38
[click on plot for closeup]
This plot

Trending plot for number of bad pixels and gain of the Fringe Tracker (FT) and Science Camera (SC) detectors. Plotted are data taken with MEDIUM spectral resolution.

NOTE: gain values show rather strong fluctuation which is likely due to the measuring method. This needs to be revised.  

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