Plot
? |
Symb
? |
Source
* |
Average ? |
Thresholds ? |
N_
data |
QC1
parameter |
Data
downloads |
Remarks |
| method |
value |
unit |
method |
value |
| 1 |
• | QC1DB |
MEDIAN |
243 |
ADU |
VAL | 230.,300. |
118 |
qc_raw_bias1_mean |
this |
last_yr |
all
|
mean level of first raw bias for detector ESO_CCD_#82 (ADU). HC scores only apply to this detector. |
| 1 |
• | QC1DB |
none |
|
ADU |
none | |
118 |
qc_raw_bias1_mean |
this |
last_yr |
all
|
mean level of first raw bias for the stable detector ESO_CCD_#81 (ADU) |
| 1 |
• | QC1DB |
none |
|
ADU |
none | |
118 |
qc_raw_bias1_mean |
this |
last_yr |
all
|
mean level of first raw bias for the stable detector ESO_CCD_#83 (ADU) |
| 2 |
• | QC1DB |
MEDIAN |
242 |
ADU |
VAL | 230.,300. |
118 |
qc_raw_bias2_mean |
this |
last_yr |
all
|
mean level of second raw bias for detector ESO_CCD_#82 (ADU). HC scores only apply to this detector. |
| 2 |
• | QC1DB |
none |
|
ADU |
none | |
118 |
qc_raw_bias2_mean |
this |
last_yr |
all
|
mean level of second raw bias for the stable detector ESO_CCD_#81 (ADU) |
| 2 |
• | QC1DB |
none |
|
ADU |
none | |
118 |
qc_raw_bias2_mean |
this |
last_yr |
all
|
mean level of second raw bias for the stable detector ESO_CCD_#83 (ADU) |
| |
|
*Data sources: QC1DB: QC1 database; LOCAL: local data source
|
Plot 1
scores:  15|
| | data source: | omegacam_readnoise
(QC1 database) |
dataset:
(numbers below apply to this dataset) | qc_raw_bias1_mean | • |
| median: | 243 | ADU |
| fixed thresholds: | 230.0...300.0 | ADU |
| N_data plotted: | 118 |
| [click plot for closeup] |
Plot 2
scores: 15|
| | data source: | omegacam_readnoise
(QC1 database) |
dataset:
(numbers below apply to this dataset) | qc_raw_bias2_mean | • |
| median: | 242 | ADU |
| fixed thresholds: | 230.0...300.0 | ADU |
| N_data plotted: | 118 |
| [click plot for closeup] |
Trending plots for the bias read-out noise. The intent is to
monitor OmegaCAM's troublesome detector ESO_CCD_#82 whose offset can
fluctuate strongly, particularly following periods when the
instrument has been idle.
For comparison, the stable detectors ESO_CCD_#81 and ESO_CCD_#83 are
plotted for reference.
DB Name: omegacam_readnoise
Fits header: QC.BIAS1.RAWREADNOISE
QC1 DB: qc_raw_bias1_mean / qc_raw_bias2_mean
Description:
The level of the two raw bias frames is measured
Setup:
BIN.X / BIN.Y / READ.MODE / READ.SPEED = 1/1/normal/normal
These Health Check plots describe:
Fig. 1 raw_bias1_mean: The mean level of the first raw
bias frame is plotted for detectors #82, #81, and #83 (in ADU).
Fig. 2 raw_bias2_mean: The mean level of the second raw
bias frame is plotted for detectors #82, #81, and #83 (in ADU).
OmegaCAM detector plane layout (detector_ID locations):
General information
Click on any of the plots to see a close-up version.
The latest date is indicated on top of the plot.
If configured,
- data points belonging to the latest date are specially marked
- 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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