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VIMOS:
detector: bias
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VIMOS trending system: HEALTH CHECK report
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Last update: 2014-11-24T10:38:59 (UT)
  | now: 2014-11-24T20:24:26 (UT) muc03 QC pipeline: vimos-2.9.13 (installed 2014-10-20)
same group: median_master ron_master rms_master ron_raw median_vs_temp   averages_low averages_high
General news:
VIMOS news:  
Report news:
DATE*: [?] 2014-11-17
report | NLT
2014-11-18
report | NLT
2014-11-19
report | NLT
2014-11-20
report | NLT
2014-11-21
report | NLT
2014-11-22
report | NLT
2014-11-23
report | NLT
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*Date on this monitor changes at 21:00 UT
Print: Information and research:
- png file - advanced studies: QC1 browser | QC1 plotter
Plot
?
Symb
?
Source
*
Average ? Thresholds ? N_
data
QC1
parameter
Data
downloads
Remarks
method value unit method value
1 QC1DB none   ADU none  158 median_master this | last_yr | all Q2, median bias, low gain
2 QC1DB none   ADU none  159 median_master this | last_yr | all Q1, median bias, low gain
3 QC1DB none   ADU none  160 median_master this | last_yr | all Q2, median bias, high gain
4 QC1DB none   ADU none  160 median_master this | last_yr | all Q1, median bias, high gain
5 QC1DB none   ADU none  159 median_master this | last_yr | all Q3, median bias, low gain
6 QC1DB none   ADU none  159 median_master this | last_yr | all Q4, median bias, low gain
7 QC1DB none   ADU none  160 median_master this | last_yr | all Q3, median bias, high gain
8 QC1DB none   ADU none  160 median_master this | last_yr | all Q4, median bias, high gain
*Data sources: QC1DB: QC1 database; LOCAL: local text file
Plot 1
scores: not implemented
data source:vimos_bias
(QC1 database)
dataset:median_master
average:none
thresholds:none
N_data plotted:158
[click on plot for closeup]
Plot 2
scores: not implemented
data source:vimos_bias
(QC1 database)
dataset:median_master
average:none
thresholds:none
N_data plotted:159
[click on plot for closeup]
Plot 3
scores: not implemented
data source:vimos_bias
(QC1 database)
dataset:median_master
average:none
thresholds:none
N_data plotted:160
[click on plot for closeup]
Plot 4
scores: not implemented
data source:vimos_bias
(QC1 database)
dataset:median_master
average:none
thresholds:none
N_data plotted:160
[click on plot for closeup]
Plot 5
scores: not implemented
data source:vimos_bias
(QC1 database)
dataset:median_master
average:none
thresholds:none
N_data plotted:159
[click on plot for closeup]
Plot 6
scores: not implemented
data source:vimos_bias
(QC1 database)
dataset:median_master
average:none
thresholds:none
N_data plotted:159
[click on plot for closeup]
Plot 7
scores: not implemented
data source:vimos_bias
(QC1 database)
dataset:median_master
average:none
thresholds:none
N_data plotted:160
[click on plot for closeup]
Plot 8
scores: not implemented
data source:vimos_bias
(QC1 database)
dataset:median_master
average:none
thresholds:none
N_data plotted:160
[click on plot for closeup]
This plot

Trending plots for bias QC parameters.

All bias parameters are measured in the central 1600x1800 pixels of the detectors. The median bias level and the rms of the master should show a stable trend without sudden jumps or increase/decrease. The read-out noise (ron_raw) is calculated from the difference of the first two raw frames. Some outliers with high values are occasionally observed due to cosmic ray events. The read-out noise as measured from master frames (ron_master) should be extremely stable.

The new detectors (since July 2010) show a correlation of the bias level with temperature, especially for quadrant 2.

Bias frames are usually measured daily during day-time. They come in two different varieties: with low gain (used for imaging) and with high gain (used to calibrate the spectroscopic modes).

Template IDs: img_cal_Dark and spec_cal_Dark. Pipeline recipe: vmbias.  


General information

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

The latest date is indicated on top of the plot.

If configured,

  • data points belonging to the latest date are specially marked
  • 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