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:
efficiency
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: 2022-08-11T22:39:20 (UT)
  | now: 2022-08-12T08:07:55 (UT) muc02 QC pipeline: xshoo-3.6.0 (installed 2022-03-21)
same group: efficiency response
General news:
XSHOOTER news:  
Report news:
DATE*: [?] 2022-08-05
report | NLT
2022-08-06
report | NLT
2022-08-07
report | NLT
2022-08-08
report | NLT
2022-08-09
report | NLT
2022-08-10
report | NLT
2022-08-11
report | NLT
r...
Raw CAL displays:
raw raw raw raw raw raw no CAL raw files
P...
CAL product quality:
products products products products products products no CAL 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 1.2 flux_ratio none  53 response_spec_a this | last_yr | all current response / reference response = a + b * lam
2 QC1DB MEDIAN -0.00016 1/nm none  53 response_spec_b this | last_yr | all current response / reference response = a + b * lam
3 QC1DB MEDIAN 1.25 flux_ratio none  53 response_spec_m_a this | last_yr | all current response / master response = a + b * lam
4 QC1DB MEDIAN -3.75e-05 1/nm none  53 response_spec_m_b this | last_yr | all current response / master response = a + b * lam
*Data sources: QC1DB: QC1 database; LOCAL: local data source
Plot 1
scores: not implemented
data source:xshooter_fluxeff
(QC1 database)
dataset:response_spec_a
median:1.2flux_ratio
thresholds:none 
N_data plotted:53
[click plot for closeup]
Plot 2
scores: not implemented
data source:xshooter_fluxeff
(QC1 database)
dataset:response_spec_b
median:-0.000161/nm
thresholds:none 
N_data plotted:53
[click plot for closeup]
Plot 3
scores: not implemented
data source:xshooter_fluxeff
(QC1 database)
dataset:response_spec_m_a
median:1.25flux_ratio
thresholds:none 
N_data plotted:53
[click plot for closeup]
Plot 4
scores: not implemented
data source:xshooter_fluxeff
(QC1 database)
dataset:response_spec_m_b
median:-3.75e-051/nm
thresholds:none 
N_data plotted:53
[click plot for closeup]
This plot

This plot monitors the XSHOOTER response function. For this reason the response functions are compared to

  • a) a reference response functions acquired on 2015-10-25 and
  • b) the master response function which is a clean and weighted average of response functions with a certain validity range.

On 2015-10-25, the first flux standard star was acquired with the effmon template, meaning this observation was acquired under strict photometric conditions. The calibration product 'response function' from that date serves as a reference in the following. It is marked by a vertical red bar in the history plot.

The master response function once generated as a weighted and clean mean of response functions for the purpose to flux calibrate XSHOOTER science observations (internal data producs = IDPs) is a representative response function for a given time range. The comparison between the reference response function (from 2015-10-25, ARCFILE=XSHOO.2015-10-26T01:23...) and the current response function as well as the comparison between the master response and the current response is parameterized via

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

current(lambda) / master(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 atmospheric variations and parameter b is a first order chromatic deviation (the slope between the reference(/master) and the current).

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

On 2015-10-25, there is a=1 and b=0 by definition. The response function is a flat-fielded efficiency, hence the response function depends on the spectral shape of the flat field lamp, on long-term changes as well as on exchanges of the lamp. For this reason, dates of lamp exchanges are marked by blue vertical bars.

Notes:

  • UVB-arm: the D2 lamp illuminated orders [305 - 360] nm and the QTH lamp illuminated orders [370 - 500] nm are fit separately. The redest order of the QTH lamp illuminated orders is not used for the fit due no known variations of the dichroic.
  • VIS-arm: The bluest orders are not used for the fit due to known variations of the dichroic: [560 - 1020] nm.
  • NIR-arm: The full range is used for the fit [1000 - 2460] nm.
 
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