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MIDI trending system: HEALTH CHECK plot
Last update: 2009-07-21T10:01:48 (UT)
| now: 2024-07-17T11:01:59 (UT)
scores active HELP USERS-GUIDE MORE
last OPSLOG data:
2009-07-10
Plot: 1 2 3 4  
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N_data: number of recent OPSLOG entries plotted here
N_data: 1 1 1 1 availability
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Plot
?
Symb
?
Source
*
OPS?
**
Average ? Thresholds ? N_
data
QC1
parameter
Data
downloads
Remarks
method value unit method value
1 QC1DB yes (1) MEDIAN 190.04083 NONE VAL189.8,190.2 49 open_beamA_X this | last_yr | all  
2 QC1DB yes (1) MEDIAN 189.17976 NONE VAL188.9,189.3 49 open_beamB_X this | last_yr | all  
3 QC1DB yes (1) MEDIAN 79.66708 NONE VAL79.2,79.8 49 open_beamA_Y this | last_yr | all  
4 QC1DB yes (1) MEDIAN 165.83971 NONE VAL165.3,166 49 open_beamB_Y this | last_yr | all  
*Data sources: QC1DB: QC1 database; LOCAL: local text file | **OPS: to indicate that OPSLOG data are included
This plot

The reference pixels of MIDI are the two pixels of the detector onto which the centroids of the target images must fall in order to ensure a proper beam overlap. They are measured using the center of a pinhole, in the 3 set-ups OPEN, HIGH_SENS and SCI_PHOT, for telescopes beams A and B feeding MIDI, for the interferometric channnels 1 and 2 of MIDI, and for the photometric channels PA and PB of MIDI (in SCI_PHOT only).  


General information

Click on any of the plots to see a close-up version.

If applicable, the latest values from Paranal ops logs are plotted as blue dots. More information about those values, including a download option, is available in the OPS column.

The latest date is indicated on top of the plot, data points belonging to that date are specially marked.

If configured,

  • 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