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ISAAC trending system: HISTORY plot
Last update: 2009-04-12T21:09:50 (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
?		 Symb
?		 Source
*		 Average ? Thresholds ? N_
data		 QC1
parameter		 Data
downloads		 Remarks
method value unit method value
1 •QC1DB MEAN 6.30704   VAL5,7.5 91 ron12 this | last_yr | all RON12 for DIT=0.28sec and DoubleCorrHighBias
2 •QC1DB MEAN 6.2083   3SIG± 0.79982 91 ron23 this | last_yr | all RON23 for DIT=0.28sec and DoubleCorrHighBias
3 •QC1DB MEAN 49.47349 ADU 3SIG± 0.97849 91 qc_darkmed this | last_yr | all dark current for DIT=0.28sec and DoubleCorrHighBias
4 •QC1DB MEAN 0.01264   VAL0,0.08 91 qc_dark_stdev this | last_yr | all raw framedark RMS for DIT=0.28sec and DoubleCorrHighBias
5 •QC1DB MEAN 6.24385   VAL5.5,6.8 91 ron12 this | last_yr | all RON12 for DIT=0.56sec and DoubleCorrHighBias
6 •QC1DB MEAN 6.14991   3SIG± 0.66625 91 ron23 this | last_yr | all RON23 for DIT=0.56sec and DoubleCorrHighBias
7 •QC1DB MEAN 52.20459 ADU 3SIG± 1.02906 91 qc_darkmed this | last_yr | all dark current for DIT=0.56sec and DoubleCorrHighBias
8 •QC1DB MEAN 0.01911   VAL0,0.03 91 qc_dark_stdev 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