Plot
[info] |
Symbol
[info] |
Source* |
OPS?** |
Average [info] |
Thresholds [info] |
N_data |
Data downloads |
Remarks |
| method |
value |
unit |
method |
value |
| 1 |
• | QC1DB |
|
MEDIAN |
0.007 |
NONE |
none | |
19 |
this |
last_yr |
all
|
ABCD,1x1,high, R_BESS (Garching) |
|
|
|
*Data sources: QC1DB: QC1 database; LOCAL: local text file | **OPS: to indicate if OPSLOG data are included
|
This plot
A derivative frame of a master M is created (by shifting a copied
version M' by 10 pixels in X and Y so that fixed-pattern noise is
randomized, and calculating the difference frame M -M' ). It is
divided by a background fit. A 100x100 pixels sigma is measured. The
photon noise is subtracted geometrically from that number, which is
afterwards divided by the median of the flux in the respective region
to get the relative fixed-pattern noise.
General information
Click on any of the plots to see a close-up version.
If applicable, the 20 latest values from Paranal ops logs are plotted as blue dots.
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
|
