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Last update: 2014-07-24T01:59:27 (UT)
  | now: 2014-07-24T05:56:25 (UT) muc01 QC pipeline: fors2-4.9.24 (installed 2014-03-11)
same group: b_HIGH,v_HIGH R_SPEC,I_BESS
General news:
FORS2 news:  
Report news:
DATE*: [?] 2014-07-17
report | NLT
2014-07-18
report | NLT
2014-07-19
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2014-07-20
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2014-07-21
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2014-07-22
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2014-07-23
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scores&comments | FULL | 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
for the frame extinctions: QC1 browser | QC1 plotter
Plot
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Symb
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Source
*
OPS?
**
Average ? Thresholds ? N_
data
QC1
parameter
Data
downloads
Remarks
method value unit method value
1 QC1DB no none   mag none  0 extinction this | last_yr | all Night extinction values for b_HIGH and detector CCID20-14-5-3 (HC plot: 28 days delay; available since 2012-06). The extinction is only displayed for nights with stable photometric conditions (stable flag is 'S' or 'Sb').
1 oQC1DB no MEDIAN 0.306 mag OFF± 0.07 44 ext_coeff this | last_yr | all Frame extinction values from STD_IMA data for above filter and chip. Values for num_stars <3 suppressed. These values are derived from single frames, under the assumption of a constant zeropoint. All values are plotted, regardless of 'stable' flag value.
1 QC1DB no none   mag none  2 ext_coeff this | last_yr | all same, only values for nights with flag 'S' or 'Sb' are plotted
2 QC1DB no none   mag none  0 extinction this | last_yr | all same as plot1 (night extinction values), for filter v_HIGH
2 oQC1DB no MEDIAN 0.177 mag OFF± 0.07 44 ext_coeff this | last_yr | all same as plot1 (frame extinction values), for filter v_HIGH
2 QC1DB no none   mag none  2 ext_coeff this | last_yr | all same, only values for nights with flag 'S' or 'Sb' are plotted

3 QC1DB no none   NONE none  44 airmass this | last_yr | all Airmass for values in plot 1 (b_HIGH). For nights classified 'S' or 'Sb' there should always be a pair with delta_AIRM > 0.4. Data points per night are connected by a line.
3 QC1DB no none   NONE none  2 mjd_obs   green bar: night has been classified 'S' (photometrically stable) or 'Sb' (photometric at begin but no more data later); red bar: 'N' (not stable); black bar: 'U' (unknown, no low-high-airmass pair taken); all data apply to the filter above
4 QC1DB no none   NONE none  44 airmass this | last_yr | all same, for filter v_HIGH
*Data sources: QC1DB: QC1 database; LOCAL: local text file | **OPS: OPSLOG data are included
Plot 1
scores: not implemented
data source:fors2_photometry
(QC1 database)
dataset:
(numbers below apply to this dataset)
extinction
average:none
thresholds:none
N_data plotted:0
[click on plot for closeup]
Plot 2
scores: not implemented
data source:fors2_photometry
(QC1 database)
dataset:
(numbers below apply to this dataset)
extinction
average:none
thresholds:none
N_data plotted:0
[click on plot for closeup]
Plot 3
scores: not implemented
data source:fors2_zp_frame
(QC1 database)
dataset:
(numbers below apply to this dataset)
airmass
average:none
thresholds:none
N_data plotted:44
[click on plot for closeup]
Plot 4
scores: not implemented
data source:fors2_zp_frame
(QC1 database)
dataset:
(numbers below apply to this dataset)
airmass
average:none
thresholds:none
N_data plotted:44
[click on plot for closeup]
This plot

This plot displays the extinction calculated by the pipeline recipe fors_zeropoint for each individual STD_IMA frame, and the nightly extinction as calculated by fors_photometry. The frame extinction is calculated with a constant instrument zeropoint which is a reasonable assumption. The true zeropoint may however deviate from the assumed one which comes from a static table. The frame extinction values are plotted for all nights (with 'stable' flag values 'S', 'Sb', 'N' and 'U'; open circles), as well as for stable nights ('S' or 'Sb', filled circles). For a definition of this flag see the 'IMG zeropoint' plots.

The nightly zeropoints are plotted here only for stable nights ('S' or 'Sb').

We plot here only values for chip 1. For the other chip, you may want to use the link to the QC1 database.

The nightly extinctions are based on the FORS2 calibration plan as part of the FORS2 Absolute Photometry (FAP) project. It foresees the acquisition of an initial pair of standard stars for "promising" nights, and the follow-up standard star fields for actually photometric nights with SCIENCE observations requiring photometric conditions.

In the lower panel, the airmasses of the individual standard star fields taken in the course of the night are plotted. One can clearly see the initial low-high-airmass pair if acquired. We also mark 'S'/'Sb' nights by a green bar, 'N' nights in red, and 'U' nights in black.

Due to the selection window and the data processing schedule, the nightly extinction values become available typically after a month.

The pipeline recipe fors_photometry is operational since 2012-06, hence the nightly extinctions are available from the same date on. All HISTORY plots earlier than 2012-06 do not have night extinctions.

More information can be found on the plot tutorial page.  


General information

Click on any of the plots to see a close-up version. 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