ISAAC trending system: HISTORY plot
Last update: 2008-07-17T09:15:45 (UT)
same group: SW_IMG SW_SPEC   LW_DCHB LW_DCLB LW_UCHB det_temp
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*Date on this monitor changes at 21:00 UT
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  • upper row DoubleCorrLowBias DIT=2.0 sec
  • lower row DoubleCorrLowBias DIT=5.0 sec
Plot
[info]		 Symbol
[info]		 Source* Average [info] Thresholds [info] N_data Data downloads Remarks
method value unit method value
1 •QC1DB MEAN 5.30657 ADU 3SIG± 0.35940 57 this | last_yr | all RON12 for DIT=2.0sec and DoubleCorrLowBias
2 •QC1DB MEAN 5.32881 ADU 3SIG± 0.38686 57 this | last_yr | all RON23 for DIT=2.0sec and DoubleCorrLowBias
3 •QC1DB MEAN 47.43006 ADU 3SIG± 0.37933 57 this | last_yr | all dark current for DIT=2.0sec and DoubleCorrLowBias
4 •QC1DB MEAN 0.31328 ADU 3SIG± 0.14444 57 this | last_yr | all raw framedark RMS for DIT=2.0sec and DoubleCorrLowBias
5 •QC1DB MEAN 5.29849 ADU 3SIG± 0.29311 54 this | last_yr | all RON12 for DIT=5.0sec and DoubleCorrLowBias
6 •QC1DB MEAN 5.28685 ADU 3SIG± 0.32197 54 this | last_yr | all RON23 for DIT=5.0sec and DoubleCorrLowBias
7 •QC1DB MEAN 49.92012 ADU 3SIG± 0.58551 54 this | last_yr | all dark current for DIT=5.0sec and DoubleCorrLowBias
8 •QC1DB MEAN 0.06621 ADU 3SIG± 0.09694 54 this | last_yr | all raw framedark RMS for DIT=5.0sec and DoubleCorrLowBias
*Data sources: QC1DB: QC1 database; LOCAL: local text file
This plot

This is the trending plot for the ISAAC Aladdin QC parameters derived from DARK frames for read mode DoubleCorrLowBias
and two DIT DIT=2sec and DIT=5sec

These plots describe:
1. RON12 for DIT=2sec,
2. RON23 for DIT=2sec,
3. Dark current for DIT=2sec,
4. RMS for DIT=5sec
5. as Fig.1 but for DIT=5sec
6. as Fig.2 but for DIT=5sec
7. as Fig.3 but for DIT=5sec
8. as Fig.4 but for DIT=5sec

RON is derived twice, once from the the first pair of raw frames (RON12 = black points), and once from the second pair of raw frames (RON23 = green points). DoubleCorr detector read modes (= ResetReadRead) show no significant difference between RON12 and RON23.
The dark is the median of the MASTER_DARK product.
The RMS is the standard deviation derived from the three raw frame median values and is a measure of the short-term dark stability fir the given DIT.
Find more information about ISAAC DARK frames here.

Other QC parameters related to detector properties (like structural noise, linearity) are trended.  

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