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FORS1 trending system: HISTORY plot |
Last update: 2009-04-02T15:49:28 (UT)
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Plot ? |
Symb ? |
Source * |
Average ? |
Thresholds ? |
N_ data |
QC1 parameter |
Data downloads |
Remarks |
method |
value |
unit |
method |
value |
1 |
| QC1DB |
MEDIAN |
0.53884 |
e-/ADU |
VAL | 0.53,0.55 |
4 |
gain |
this |
last_yr |
all
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chip 1, high gain |
2 |
| QC1DB |
MEDIAN |
0.57691 |
e-/ADU |
VAL | 0.57,0.59 |
4 |
gain |
this |
last_yr |
all
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chip 2, high gain |
3 |
| QC1DB |
MEDIAN |
2.28196 |
e-/ADU |
VAL | 2.245,2.285 |
3 |
gain |
this |
last_yr |
all
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chip 1, low gain |
4 |
| QC1DB |
MEDIAN |
2.37062 |
e-/ADU |
VAL | 2.34,2.38 |
3 |
gain |
this |
last_yr |
all
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chip 2, low gain |
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*Data sources: QC1DB: QC1 database; LOCAL: local text file
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This plot
The gain is derived from a set of paired flat fields with identical
exposure time, using the Photon Transfer Curve method. For more
information see the tutorial page.
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
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