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XSHOOTER trending system: HEALTH CHECK report
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Last update: 2014-10-30T10:41:03 (UT)
  | now: 2014-10-30T16:05:19 (UT) muc02 QC pipeline: xshoo-2.4.0 (installed 2014-03-26)
same group: flat_HC_IFU slice_rms   flat_IFU flat_SLIT arc_lamp
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DATE*: [?] 2014-10-23
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2014-10-24
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2014-10-25
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2014-10-26
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2014-10-27
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2014-10-28
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2014-10-29
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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 MEDIAN 0.0103 ADU OFF± 0.01 68 slice2_rms this | last_yr | all rms over three slice (of a red or a blue echelle order) window counts
2 QC1DB no MEDIAN 0.0342 ADU OFF± 0.01 68 slice_rms this | last_yr | all rms over three slice (of a red or a blue echelle order) window counts
4 QC1DB no MEDIAN 0.0419 ADU OFF± 0.02 68 slice2_s_rms this | last_yr | all relative difference between the two outer slices (of a red or a blue echelle order) window counts
5 QC1DB no MEDIAN 0.0507 ADU OFF± 0.01 68 slice_s_rms this | last_yr | all relative difference between the two outer slices (of a red or a blue echelle order) window counts
6 QC1DB no MEDIAN 0.679 ratio OFF± 0.03 68 flux_order_ratio this | last_yr | all counts ratio between the blue and the red echelle order (IFU HC flats only)
*Data sources: QC1DB: QC1 database; LOCAL: local text file | **OPS: OPSLOG data are included
Plot 1
scores: 15|
data source:xshooter_flat
(QC1 database)
dataset:slice2_rms
median:0.0103ADU
rel. thresholds: 0.000275...0.020275ADU
N_data plotted:68
[click on plot for closeup]
Plot 2
scores: 15|
data source:xshooter_flat
(QC1 database)
dataset:slice_rms
median:0.0342ADU
rel. thresholds: 0.024221...0.044221ADU
N_data plotted:68
[click on plot for closeup]
Plot 6
scores: 15|
data source:xshooter_flat
(QC1 database)
dataset:flux_order_ratio
median:0.679ratio
rel. thresholds: 0.649057...0.709057ratio
N_data plotted:68
[click on plot for closeup]
Plot 4
scores: 15|
data source:xshooter_flat
(QC1 database)
dataset:slice2_s_rms
median:0.0419ADU
rel. thresholds: 0.021859...0.061859ADU
N_data plotted:68
[click on plot for closeup]
Plot 5
scores: 15|
data source:xshooter_flat
(QC1 database)
dataset:slice_s_rms
median:0.0507ADU
rel. thresholds: 0.040694...0.060694ADU
N_data plotted:68
[click on plot for closeup]
This plot

This plot shows two QC parameters measuring the illumination distribution within IFU FLATs. Both kind of IFU flats contribute:

  • IFU health check flats generated from one (VIS) or two (NIR/UVB) raw flats and
  • IFU master flats generated from five (VIS) or ten (UVB/NIR) raw flats, acquired to calibrate science data.

In a first step the median counts are measured in six dedicated windows:

S1R (slice 1 in a red order),
S2R (slice 2 in the same red order, central slice),
S3R (slice 3 in the same red order),
S1B (slice 1 in a blue order),
S2B (slice 2 in the same blue order, central slice),
S3B (slice 3 in the same blue order.

The QC parameter slice_rms is the rms of the three red order slice counts.
The QC parameter slice2_rms is the rms of the three blue order slice counts.

The QC parameter flux_order_ratio is a relative difference between the two flux averages:

fr = ( S1R + S2R + S3R ) / 3.0, (average counts in the three red order slices)

fb = ( S1B + S2B + S3B ) / 3.0, (average counts in the three blue order slices)

flux_order_ratio = (fr - fb) / fr (relative difference)

Since 2014-07-31

The QC parameter slice_s_rms is the relative difference between the two outer slices in the red order.

slice_s_rms = ( S1R - S3R ) / ( SR1 + SR3 ) * 2.0 ;

The QC parameter slice2_s_rms is the relative difference between the two outer slices in the blue order.

slice2_s_rms = ( S1B - S3B ) / ( S1B + S3B ) * 2.0 ;

When one outer slice becomes brighter than the other outer slice the sign of the QC parameter will change.

The windows currently (2012-07-06) in use are (x1, y1, x2, y2)
coords given in pixels of the master flat product:

  • UVB S1R: '1452 1500 1471 1600'
  • UVB S2R: '1477 1500 1493 1600'
  • UVB S3R: '1501 1500 1518 1600'
  • UVB S1B: ' 513 2330 532 2380'
  • UVB S2B: ' 539 2330 557 2380'
  • UVB S3B: ' 564 2330 582 2380'
  • VIS S1R: '1652 2050 1666 2100'
  • VIS S2R: '1674 2050 1684 2100'
  • VIS S3R: '1697 2050 1711 2100'
  • VIS S1B: ' 426 2605 444 2757'
  • VIS S2B: ' 452 2605 470 2757'
  • VIS S3B: ' 477 2605 496 2757'
  • NIR S1R: '622 1133 632 1175'
  • NIR S2R: '638 1133 647 1175'
  • NIR S3R: '655 1133 665 1175'
  • NIR S1B: '125 1080 135 1111'
  • NIR S2B: '143 1080 152 1111'
  • NIR S3B: '160 1080 169 1111'
  • values before format shift from 2013-02-15
  • NIR S1R: '620 1133 630 1175'
  • NIR S2R: '636 1133 646 1175'
  • NIR S3R: '653 1133 663 1175'
  • NIR S1B: '123 1080 133 1111'
  • NIR S2B: '141 1080 150 1111'
  • NIR S3B: '158 1080 167 1111'

2013-03-22: The UVB windows have been made narrower The window sizes and positions are preliminmary and will be reviewed to optimize the sensitivity.

2013-05-27: in the UVB-arm, blue orders are illuminated by the D2 lamp (< 350 nm) and red orders are illuminated by the QTH lamp (> 350 nm). Hence the UVB-arm flux_order_ratio QC parameter measures the flux ration between two different lamps and ADC effects together. Both effects are not deconvolved. The UVB-arm flux_order_ratio QC parameter is therefore not scored. The bi-modal distribution of the UVB-arm flux ratio is due to warm-up effects.  


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