Plot |
Symbol [info] |
Source* |
Average [info] |
Thresholds [info] |
N_data |
Data downloads |
Remarks |
method |
value |
unit |
method |
value |
1 |
| QC1DB |
none | |
ADU |
none | |
88 |
this |
last_yr |
all
|
structural (fixed pattern) noise for UncorrHighBias DIT=0.11 in upper left (UL) quadrant. |
|
2 |
| QC1DB |
none | |
ADU |
none | |
88 |
this |
last_yr |
all
|
like Fig.1, upper right (UR) quadrant, DIT=0.11 |
|
5 |
| QC1DB |
none | |
ADU |
none | |
88 |
this |
last_yr |
all
|
like Fig.1, lower left (LL) quadrant, DIT=0.11 |
|
6 |
| QC1DB |
none | |
ADU |
none | |
88 |
this |
last_yr |
all
|
like Fig.1, lower right (LR) quadrant, DIT=0.11 |
|
*Data sources: OPSLOG: Paranal ops logs; QC1DB: QC1 database; LOCAL: local text file
|
This plot
This is the trending plot for the ISAAC
Aladdin structural noise (fixed pattern noise)
QC parameters derived from DARK frames.
QC parameter are derived from post-pipeline
Quality Control processes in Garching, hence there are no
values from Paranal to be included.
Method: take a simple standard deviation of the MASTER_DARK frame
quadrant, no clipping is applied. This paramater is by intention sensitive
to changes in the number and strength of hot pixels. The robust scatter
of the MASTER_DARKs is trended by the FPN QC parameter
These plots describe:
1. stdev mode = UncorrHighBias, DIT=0.11sec, quadrant = upper left (UL),
2. stdev As Fig.1, but for UR quadrant
5. stdev As Fig.1 but for LL quadrant
6. stdev As Fig.1 but for LR quadrant
Find more information about ISAAC DARK frames
here.
Other QC parameters related to detector properties
(like
read 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
|