FORS1 trending system: HISTORY plot
Last update: 2007-03-08T13:41:05 (UT)
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:
- 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 MEDIAN1.722 ADU 3SIG± 0.032 36 this | last_yr | all 4port readout (Garching)
2 •QC1DB MEDIAN1.514 ADU 3SIG± 0.050 32 this | last_yr | all 4port readout (Garching)
4 •QC1DB MEDIAN1.708 ADU 3SIG± 0.055 59 this | last_yr | all 4port readout (Garching)
5 •QC1DB MEDIAN1.604 ADU 3SIG± 0.046 36 this | last_yr | all 4port readout (Garching)
6 •QC1DB MEDIAN1.919 ADU 3SIG± 0.034 44 this | last_yr | all 1port readout (Paranal)
3 xQC1DB MEDIAN11.900 ADU 3SIG± 7.075 149 this | last_yr | all Temperature at Instrument Focus
*Data sources: OPSLOG: Paranal ops logs; QC1DB: QC1 database; LOCAL: local text file
This plot

An expected master bias noise is computed as the value of QC OUTi RON, divided by the square root of the number of raw bias frames used in the construction of the master bias. Next, the population standard deviation of the pixel values from port i of the master bias is determined, excluding from the computation all those values that differ from QC OUTi MBIAS LEVEL more than three times the expected noise.  

General information

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