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FORS1 trending system: HEALTH CHECK plot
Last update: 2008-12-04T23:35:17 (UT)
| now: 2008-12-05T02:58:08 (UT)
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same group: med_master ron_raw ron_master fp_raw struct_raw
last OPSLOG data:
2008-12-04
Plot: 1 2 3 4   latest_files
N_data: number of recent OPSLOG entries plotted here
N_data: 11 11 10 10 availability
close window history: 2007   2008   HEALTH
 
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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 (11) MEDIAN 4.86 ADU VAL4.7,5.1 85 RON_r this | last_yr | all Chip 1, high gain (0.54 e-/ADU, Garching)
2 QC1DB yes (11) MEDIAN 4.36 ADU VAL4.2,4.6 85 RON_r this | last_yr | all Chip 2, high gain (0.60 e-/ADU, Garching)
3 QC1DB yes (10) MEDIAN 1.8 ADU VAL1.7,2 88 RON_r this | last_yr | all Chip 1, low gain (2.26 e-/ADU, Garching)
4 QC1DB yes (10) MEDIAN 1.68 ADU VAL1.6,1.8 88 RON_r this | last_yr | all Chip 2, low gain (2.47 e-/ADU, Garching)
*Data sources: QC1DB: QC1 database; LOCAL: local text file | **OPS: to indicate that OPSLOG data are included
This plot

The difference between the first and the second input raw biases (in ADU) is computed. The population standard deviation of the pixel values of this difference, divided by the square root of 2, is taken as the RON.  


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