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GRAVITY trending system: HEALTH CHECK report
HELP USERS-GUIDE MORE
Last update: 2026-04-16T18:36:48 (UT)
  | now: 2026-04-17T08:14:09 (UT) muc05 QC pipeline: gravity-1.5.4 (installed 2022-03-24)
same group: AT_SC_low AT_SC_med AT_SC_high AT_FT   UT_SC_low UT_SC_med UT_SC_high UT_FT
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*: [?] 2026-04-10
report | NLT 		2026-04-11
report | NLT 		2026-04-12
report | NLT 		2026-04-13
report | NLT 		2026-04-14
report | NLT 		2026-04-15
report | NLT 		2026-04-16
no data | NLT
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transfer   ngas [?]

scores&comments | FULL | history ... | plot tutorial ... | contact | HC_docu... | quality events...               [?] 		*Date on this monitor changes at 21:00 UT
png: 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 0.961 none none  170 tf_visamp_ft12_p1 this | last_yr | all visamp, AT, base line 12, FT, SPLIT polarimetry
2 •QC1DB MEDIAN 0.969 none none  170 tf_visamp_ft13_p1 this | last_yr | all visamp, AT, base line 13, FT, SPLIT polarimetry
3 •QC1DB MEDIAN 0.965 none none  170 tf_visamp_ft14_p1 this | last_yr | all visamp, AT, base line 14, FT, SPLIT polarimetry
4 •QC1DB MEDIAN 0.974 none none  170 tf_visamp_ft23_p1 this | last_yr | all visamp, AT, base line 23, FT, SPLIT polarimetry
5 •QC1DB MEDIAN 0.97 none none  170 tf_visamp_ft24_p1 this | last_yr | all visamp, AT, base line 24, FT, SPLIT polarimetry
6 •QC1DB MEDIAN 0.965 none none  170 tf_visamp_ft34_p1 this | last_yr | all visamp, AT, base line 34, FT, SPLIT polarimetry
7 •QC1DB MEDIAN 0.951 none none  293 tf_visamp_ft12_p1 this | last_yr | all visamp, AT, base line 12, FT, COMBINED polarimetry
8 •QC1DB MEDIAN 0.947 none none  293 tf_visamp_ft13_p1 this | last_yr | all visamp, AT, base line 13, FT, COMBINED polarimetry
9 •QC1DB MEDIAN 0.702 none none  293 tf_visamp_ft14_p1 this | last_yr | all visamp, AT, base line 14, FT, COMBINED polarimetry
10 •QC1DB MEDIAN 0.949 none none  293 tf_visamp_ft23_p1 this | last_yr | all visamp, AT, base line 23, FT, COMBINED polarimetry
11 •QC1DB MEDIAN 0.684 none none  293 tf_visamp_ft24_p1 this | last_yr | all visamp, AT, base line 24, FT, COMBINED polarimetry
12 •QC1DB MEDIAN 0.716 none none  293 tf_visamp_ft34_p1 this | last_yr | all visamp, AT, base line 34, FT, COMBINED polarimetry
*Data sources: QC1DB: QC1 database; LOCAL: local data source
Plot 1
scores: not implemented
data source:gravity_vis
(QC1 database)
dataset:tf_visamp_ft12_p1•
median:0.961none
thresholds:none 
N_data plotted:170
[click plot for closeup]
Plot 2
scores: not implemented
data source:gravity_vis
(QC1 database)
dataset:tf_visamp_ft13_p1•
median:0.969none
thresholds:none 
N_data plotted:170
[click plot for closeup]
Plot 3
scores: not implemented
data source:gravity_vis
(QC1 database)
dataset:tf_visamp_ft14_p1•
median:0.965none
thresholds:none 
N_data plotted:170
[click plot for closeup]
Plot 4
scores: not implemented
data source:gravity_vis
(QC1 database)
dataset:tf_visamp_ft23_p1•
median:0.974none
thresholds:none 
N_data plotted:170
[click plot for closeup]
Plot 5
scores: not implemented
data source:gravity_vis
(QC1 database)
dataset:tf_visamp_ft24_p1•
median:0.97none
thresholds:none 
N_data plotted:170
[click plot for closeup]
Plot 6
scores: not implemented
data source:gravity_vis
(QC1 database)
dataset:tf_visamp_ft34_p1•
median:0.965none
thresholds:none 
N_data plotted:170
[click plot for closeup]
Plot 7
scores: not implemented
data source:gravity_vis
(QC1 database)
dataset:tf_visamp_ft12_p1•
median:0.951none
thresholds:none 
N_data plotted:293
[click plot for closeup]
Plot 8
scores: not implemented
data source:gravity_vis
(QC1 database)
dataset:tf_visamp_ft13_p1•
median:0.947none
thresholds:none 
N_data plotted:293
[click plot for closeup]
Plot 9
scores: not implemented
data source:gravity_vis
(QC1 database)
dataset:tf_visamp_ft14_p1•
median:0.702none
thresholds:none 
N_data plotted:293
[click plot for closeup]
Plot 10
scores: not implemented
data source:gravity_vis
(QC1 database)
dataset:tf_visamp_ft23_p1•
median:0.949none
thresholds:none 
N_data plotted:293
[click plot for closeup]
Plot 11
scores: not implemented
data source:gravity_vis
(QC1 database)
dataset:tf_visamp_ft24_p1•
median:0.684none
thresholds:none 
N_data plotted:293
[click plot for closeup]
Plot 12
scores: not implemented
data source:gravity_vis
(QC1 database)
dataset:tf_visamp_ft34_p1•
median:0.716none
thresholds:none 
N_data plotted:293
[click plot for closeup]
This plot

Transfer function visibility amplitudes per baseline from night-time calibrator measurements.  

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