mirror sites: PL (internal link) HQ     [?]

Health Check monitor

 

CAL | HC | refs | QC
HealthCheck Monitor
   HOME | UsersGuide
  sl icon ALL INSTRUMENTS
 
FULL reports
FLAMES/GIRAFFE:
flat: level
Other HC:
QC links:
        [page auto-refreshes after 300 sec]   [stop | on]            [press Ctrl+Shift+R to enforce refresh of scores, dates and news]
GIRAFFE trending system: HEALTH CHECK report
HELP USERS-GUIDE MORE
Last update: 2014-09-03T04:31:15 (UT)
  | now: 2014-09-03T08:16:45 (UT) muc02 QC pipeline: giraf-2.12 (installed 2014-03-18)
same group: Health   all_FLATs per_WLN
General news:
GIRAFFE news:  
Report news:
DATE*: [?] 2014-08-27
report | NLT
2014-08-28
report | NLT
2014-08-29
report | NLT
2014-08-30
report | NLT
2014-08-31
report | NLT
2014-09-01
report | NLT
2014-09-02
report | NLT
P...
Product quality:
products products products products products products products
  last OPSLOG data:
2014-09-01*

last files ...
monitor

scores&comments | history ... | plot tutorial ... | contact                 daily/often; important to check     [?]
*Date on this monitor changes at 21:00 UT
Print: Information and research:
- png file - advanced studies: QC1 browser | QC1 plotter
- efficiency curves for Medusa settings
- current fibre pattern
- reference flats
Plot
?
Symb
?
Source
*
OPS?
**
Average ? Thresholds ? N_
data
QC1
parameter
Data
downloads
Remarks
method value unit method value
1 QC1DB yes (2) MEDIAN 7.83e+03 counts VAL2000,15000 40 mean_raw this | last_yr | all flat field level, L543.1 setting; Medusa1
2 +QC1DB yes (2) MEDIAN 7.64e+03 counts VAL2000,15000 33 mean_raw this | last_yr | all as plot 1, Medusa2
4 QC1DB yes (0) MEDIAN 8.53e+03 counts VAL3000,24000 24 mean_raw this | last_yr | all as plot 1, IFU1
5 QC1DB yes (4) MEDIAN 8.27e+03 counts VAL3000,24000 29 mean_raw this | last_yr | all as plot 1, IFU2
6 QC1DB yes (2) MEDIAN 7.37e+03 counts VAL3000,24000 21 mean_raw this | last_yr | all as plot 1, Argus
*Data sources: QC1DB: QC1 database; LOCAL: local text file | **OPS: OPSLOG data are included
Plot 1
scores: 3|
data source:giraffe_flat
(QC1 database)
dataset:mean_raw
median:7.83e+03counts
fixed thresholds:2000...15000counts
N_data plotted:40
[click on plot for closeup]
Plot 2
scores: 3|
data source:giraffe_flat
(QC1 database)
dataset:mean_raw+
median:7.64e+03counts
fixed thresholds:2000...15000counts
N_data plotted:33
[click on plot for closeup]
Plot 4
scores: 2|
data source:giraffe_flat
(QC1 database)
dataset:mean_raw
median:8.53e+03counts
fixed thresholds:3000...24000counts
N_data plotted:24
[click on plot for closeup]
Plot 5
scores: 4|
data source:giraffe_flat
(QC1 database)
dataset:mean_raw
median:8.27e+03counts
fixed thresholds:3000...24000counts
N_data plotted:29
[click on plot for closeup]
Plot 6
scores: 4|
data source:giraffe_flat
(QC1 database)
dataset:mean_raw
median:7.37e+03counts
fixed thresholds:3000...24000counts
N_data plotted:21
[click on plot for closeup]
This plot

This is the Health Check plot for the signal level in the GIRAFFE flat field calibration data. We display the QC1 parameter mean_raw (QC.OUT1.MEAN.RAW) of the first input raw frame. This plot monitors the L543.1 HC flat data only.

The purpose of this plot is to guarantee that all flat field calibration data have an exposure level which is good enough to record the pixel-to-pixel gain variations.

Check the other plots of this group for data from any measured flat field, sorted over time ("ALL") or over wavelength ("per WLN").

The data are checked against upper and lower limits. The lower limit is the most important one. From the CCD trending plot (no. 1), it follows that a single flat must have a minimum flux level of roughly 20.000 ADU at the fibre peak, in order to be dominated by the pixel-to-pixel gain pattern rather than by photon noise. From the topology of the flat frame signal, it follows a corresponding mean_raw value of about 7000 ADU. Assuming three input flats creating a single master fiber flat, we derive an approximate lower limit of 2000 ADU. This value is marked as lower threshold in the plot.

In the same way, the IFU flats require about 3000 ADUs on average.

The upper limit is derived from the saturation limit.  


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