ISAAC trending system: HISTORY plot
Last update: 2008-07-17T09:47:05 (UT)
same group: SW_IMG SW_SPEC   LW_DCHB LW_DCLB LW_UCHB det_temp
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  • upper row DoubleCorrHighBias DIT=0.28 sec
  • lower row DoubleCorrHighBias DIT=0.56 sec
Plot
[info]
Symbol
[info]
Source* Average [info] Thresholds [info] N_data Data downloads Remarks
method value unit method value
1 QC1DB MEAN 6.44365 ADU 3SIG± 1.45041 53 this | last_yr | all RON12 for DIT=0.28sec and DoubleCorrHighBias
2 QC1DB MEAN 6.61694 ADU 3SIG± 1.58882 53 this | last_yr | all RON23 for DIT=0.28sec and DoubleCorrHighBias
3 QC1DB MEAN 49.78001 ADU 3SIG± 1.23256 53 this | last_yr | all dark current for DIT=0.28sec and DoubleCorrHighBias
4 QC1DB MEAN 0.01066 ADU 3SIG± 0.01067 53 this | last_yr | all raw framedark RMS for DIT=0.28sec and DoubleCorrHighBias
5 QC1DB MEAN 6.43847 ADU 3SIG± 1.66928 53 this | last_yr | all RON12 for DIT=0.56sec and DoubleCorrHighBias
6 QC1DB MEAN 6.58292 ADU 3SIG± 1.49971 53 this | last_yr | all RON23 for DIT=0.56sec and DoubleCorrHighBias
7 QC1DB MEAN 52.51735 ADU 3SIG± 1.24423 53 this | last_yr | all dark current for DIT=0.56sec and DoubleCorrHighBias
8 QC1DB MEAN 0.01115 ADU 3SIG± 0.01738 53 this | last_yr | all raw framedark RMS for DIT=0.56sec and DoubleCorrHighBias
*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 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