FORS1 trending system: HEALTH CHECK plot
Last update: 2007-04-12T13:55:27 (UT) | last data from: 2007-03-26
other plots from the same group: med_mast_H ron_raw_H ron_mast_H fp_raw_H struct_raw_H
close window history: 2005 2006   2007   HEALTH
 
Print: Information and research: News:
- png file - advanced studies: QC1 browser | QC1 plotter
  
Plot Symbol
[info]		 Source* Average [info] Thresholds [info] N_data Data downloads Remarks
method value unit method value
1 •QC1DB MEDIAN0.648 ADU 3SIG± 0.189 3 this | last_yr | all 4port readout (Garching)
2 •QC1DB MEDIAN0.503 ADU 3SIG± 0.239 24 this | last_yr | all 4port readout (Garching)
4 •QC1DB MEDIAN0.804 ADU 3SIG± 0.147 17 this | last_yr | all 4port readout (Garching)
5 •QC1DB MEDIAN0.674 ADU 3SIG± 0.162 35 this | last_yr | all 4port readout (Garching)
6 •QC1DB MEDIAN1.147 ADU 3SIG± 0.175 12 this | last_yr | all 1port readout (Paranal)
3 xQC1DB MEDIAN13.800 ADU 3SIG± 5.786 46 this | last_yr | all Temperature at Instrument Focus
*Data sources: OPSLOG: Paranal ops logs; QC1DB: QC1 database; LOCAL: local text file
This plot

The population standard deviation of the pixel values (per port) of the first input raw bias is computed. This is the combination of structure, fixed pattern noise, and read out noise. The read out noise and the fixed pattern noise contributions are then quadratically subtracted.  

General information

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

If applicable, the 20 latest values from Paranal ops logs are plotted as blue dots.

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