Plot
? |
Symb
? |
Source
* |
OPS?
** |
Average ? |
Thresholds ? |
N_
data |
QC1
parameter |
Data
downloads |
Remarks |
| method |
value |
unit |
method |
value |
| 1 |
• | QC1DB |
yes (2) |
MEDIAN |
1.84323 |
e-/photon |
VAL | 0.5,6.0 |
40 |
med_through |
this |
last_yr |
all
|
throughput, WREF=1087.3, chip 3 |
| 2 |
• | QC1DB |
yes (2) |
MEDIAN |
2.02232 |
e-/photon |
VAL | 0.5,6.0 |
28 |
med_through |
this |
last_yr |
all
|
throughput, WREF=1504.8, chip 3 |
| 3 |
• | QC1DB |
yes (2) |
MEDIAN |
2.69458 |
e-/photon |
VAL | 0.5,6.0 |
28 |
med_through |
this |
last_yr |
all
|
throughput, WREF=2205.0, chip 3 |
| 4 |
• | QC1DB |
yes (2) |
MEDIAN |
2.61925 |
e-/photon |
VAL | 0.5,6.0 |
26 |
med_through |
this |
last_yr |
all
|
throughput, WREF=3611.0, chip 3 |
| 5 |
• | QC1DB |
yes (2) |
MEDIAN |
3.87398 |
e-/photon |
VAL | 0.5,6.0 |
30 |
med_through |
this |
last_yr |
all
|
throughput, WREF=5050.4, chip 3 |
| |
|
*Data sources: QC1DB: QC1 database; LOCAL: local text file | **OPS: to indicate that OPSLOG data are included
|
This plot
Trending plots for efficiency measurements (throughput in e-/photon in per
cent) with
spectro-phomtometric standard stars. Throughput is defined as the ratio of the
measured electrons (e-/sec/pixel) and the expected photon flux
(photons/sec/pixel). This value is expressed in per cent.
The overall instrument efficiency is measured with standard star observations
in 5 dedicated settings: 1087.3, 1504.8, 2205.0, 3611.0, and 5050.4 nm
reference wavelength. These plots show the median throughput for chip 3.
General information
Click on any of the plots to see a close-up version.
If applicable, the latest values from Paranal ops logs are plotted as blue dots. More information about those values, including a download option, is available in the OPS column.
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
|
score overview
scores ...
