ISAAC trending system: HISTORY plot
Last update: 2007-05-15T15:53:45 (UT)
same group: SW_IMG SW_SPEC   LW_DCHB LW_DCLB LW_UCHB det_temp
close window history: 2001 2002 2003   2004   2005   2006 2007 2008 2009 2010 2011 2012 2013   HEALTH
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*Date on this monitor changes at 21:00 UT
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Plot Symbol
[info]		 Source* Average [info] Thresholds [info] N_data Data downloads Remarks
method value unit method value
1 •QC1DB MEAN6.761 ADU 3SIG± 2.566 2 this | last_yr | all RON12 for DIT=0.28sec and DoubleCorrHighBias
2 •QC1DB MEAN6.621 ADU 3SIG± 0.604 2 this | last_yr | all RON23 for DIT=0.28sec and DoubleCorrHighBias
3 •QC1DB MEAN48.998 ADU 3SIG± 0.032 2 this | last_yr | all dark current for DIT=0.28sec and DoubleCorrHighBias
4 •QC1DB MEAN  ADU 3SIG± 0.000 0 this | last_yr | all raw framedark RMS for DIT=0.28sec and DoubleCorrHighBias
5 •QC1DB MEAN6.565 ADU 3SIG± 1.386 3 this | last_yr | all RON12 for DIT=0.56sec and DoubleCorrHighBias
6 •QC1DB MEAN6.240 ADU 3SIG± 1.044 3 this | last_yr | all RON23 for DIT=0.56sec and DoubleCorrHighBias
7 •QC1DB MEAN51.984 ADU 3SIG± 0.478 3 this | last_yr | all dark current for DIT=0.56sec and DoubleCorrHighBias
8 •QC1DB MEAN  ADU 3SIG± 0.000 0 this | last_yr | all raw framedark RMS for DIT=0.56sec and DoubleCorrHighBias
*Data sources: OPSLOG: Paranal ops logs; 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 DoubleCorrHighBias
and two DIT DIT=0.28sec and DIT=0.56sec

These plots describe:
1. RON12 for DIT=0.28sec,
2. RON23 for DIT=0.28sec,
3. Dark current for DIT=0.28sec,
4. RMS of the three raw dark medians for DIT=0.28sec
5. as Fig.1 but for DIT=0.56sec
6. as Fig.2 but for DIT=0.56sec
7. as Fig.3 but for DIT=0.56sec
8. as Fig.4 but for DIT=0.56sec

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 for 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