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FORS1 trending system: History Plots
Last update: 2009-04-29T14:06:50 (UT)
| now: 2024-04-25T10:34:55 (UT)  
same group: med_mast_H ron_raw_H ron_mast_H fp_raw_H struct_raw_H
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Plot
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Symb
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Source
*
OPS?
**
Average ? Thresholds ? N_
data
QC1
parameter
Data
downloads
Remarks
method value unit method value
1 QC1DB yes (0) MEDIAN 1.759 ADU 3SIG± 0.1335 55 noise_masterA this | last_yr | all 4port readout (Garching)
2 QC1DB yes (0) MEDIAN 1.527 ADU 3SIG± 0.10852 55 noise_masterB this | last_yr | all 4port readout (Garching)
4 QC1DB yes (0) MEDIAN 1.727 ADU 3SIG± 0.04813 55 noise_masterC this | last_yr | all 4port readout (Garching)
5 QC1DB yes (0) MEDIAN 1.609 ADU 3SIG± 0.10496 55 noise_masterD this | last_yr | all 4port readout (Garching)
6 QC1DB yes (0) MEDIAN 1.945 ADU 3SIG± 0.09402 54 noise_masterA this | last_yr | all 1port readout (Paranal)
3 xQC1DB yes (0) MEDIAN 14.3 ADU 3SIG± 5.51548 158 ins_focus_temp this | last_yr | all Temperature at Instrument Focus
*Data sources: QC1DB: QC1 database; LOCAL: local text file | **OPS: to indicate that OPSLOG data are included
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.

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