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

Health Check monitor

 

CAL | HC | refs | QC
HealthCheck Monitor
   HOME | UsersGuide
  sl icon ALL INSTRUMENTS
 
all KPI reports
XSHOOTER:
lamps: arc & flat
Other HC:
QC links:
        [page auto-refreshes after 300 sec]   [stop | on]            [press Ctrl+Shift+R to enforce refresh of scores, dates and news]
XSHOOTER trending system: HEALTH CHECK report
HELP USERS-GUIDE MORE
Last update: 2022-11-25T22:37:59 (UT)
  | now: 2022-11-26T09:57:11 (UT) muc02 QC pipeline: xshoo-3.6.0 (installed 2022-03-21)
same group: flat_HC_IFU slice_rms   flat_IFU flat_SLIT arc_lamp spectrum SLIT stdev
General news: NOTE: The Health Check and calChecker services will be moved to qcFlow in the course of 2023 on an instrument by instrument basis. The current pages will then not be updated any longer.
XSHOOTER news:  
Report news:
DATE*: [?] 2022-11-19
report | NLT
2022-11-20
report | NLT
2022-11-21
report | NLT
2022-11-22
report | NLT
2022-11-23
report | NLT
2022-11-24
report | NLT
2022-11-25
report | NLT
r...
Raw CAL displays:
raw raw raw raw raw raw raw
P...
CAL product quality:
products products products products products products products
 
transfer   ngas [?]

scores&comments | FULL | history ... | plot tutorial ... | contact | HC_docu... | quality events...               [?]
*Date on this monitor changes at 21:00 UT
png: Information and research:
- png file - advanced studies: QC1 browser | QC1 plotter
Plot
?
Symb
?
Source
*
Average ? Thresholds ? N_
data
QC1
parameter
Data
downloads
Remarks
method value unit method value
1 QC1DB MEDIAN 0.969 flux_ratio none  30 flat_spec_a this | last_yr | all current flat / reference flat = a + b * (lam - lam0)
2 QC1DB MEDIAN 0.0324 1/nm VAL-0.8,1.2 30 flat_spec_b this | last_yr | all current flat / reference flat = a + b * (lam - lam0)
*Data sources: QC1DB: QC1 database; LOCAL: local data source
Plot 1
scores: not implemented
data source:xshooter_flat
(QC1 database)
dataset:flat_spec_a
median:0.969flux_ratio
thresholds:none 
N_data plotted:30
[click plot for closeup]
Plot 2
scores: not implemented
data source:xshooter_flat
(QC1 database)
dataset:flat_spec_b
median:0.03241/nm
fixed thresholds:-0.8...1.21/nm
N_data plotted:30
[click plot for closeup]
This plot

This plot monitors XSHOOTER flat field spectra. For this reason flat field spectra are generated and are compared to a reference flat field spectrum.

We fit the flat field spectrum via the following linear formular:

current(lambda) = reference(lambda) * ( a + b * ( lambda - lambda_0 )

where lambda_0 is the center wavelength of the considered wavelength range, parameter a is the relative overall flux of the spectrum, corresponding to the lamp power and parameter b is a first order chromatic deviation (the slope between the reference flat spectrum and current flat spectrum). The reference spectrum is from 2015-10-24.

This plot shows both parameters a and b, of which paramter b is the important one.

On 2015-10-24, there is a=1 and b=0 by definition.

E.g. a = 1.22 means the current flux calibrated flat spectrum is 22% brighter than the flux calibrated reference spectrum.

A negative b (e.g. b = -1e-4) means the spectral slope of the current spectrum is less steep, hence blueer than the reference spectrum. In the trending plot, increasing b means the spectrum becomes redder, decreasing b means the spectrum gets more blue.  


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