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SPHERE trending system: HISTORY report
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Last update: 2023-05-04T14:33:20 (UT)
same group: med_master ron NumHotPix persistence persist/temp   Background NormPersist
close window history: 2019 2020 2021   2022   2023   2024   HEALTH FULL
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*Date on this monitor changes at 21:00 UT
png: Information and research:
- png file - advanced studies: QC1 browser | QC1 plotter
Plot
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Symb
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Source
*
Average ? Thresholds ? N_
data
QC1
parameter
Data
downloads
Remarks
method value unit method value
1 QC1DB none   ADU/min/deg VAL0.5,2.2 18 qc_PersdDeg this | last_yr | all DIT=1.6507, NDIT=20
2 QC1DB none   ADU/min/deg VAL0.5,2.0 17 qc_PersdDeg this | last_yr | all DIT=2, NDIT=20
3 QC1DB none   ADU/min/deg VAL0.5,2.0 36 qc_PersdDeg this | last_yr | all DIT=4, NDIT=20
4 QC1DB none   ADU/min/deg VAL0.5,1.8 22 qc_PersdDeg this | last_yr | all DIT=8, NDIT=25
5 QC1DB none   ADU/min/deg VAL0.5,1.9 41 qc_PersdDeg this | last_yr | all DIT=16, NDIT=20
6 QC1DB none   ADU/min/deg VAL0.5,1.8 22 qc_PersdDeg this | last_yr | all DIT=30, NDIT=25
*Data sources: QC1DB: QC1 database; LOCAL: local data source
Plot 1
data source:sphere_ifs_background
(QC1 database)
dataset:qc_PersdDeg
average:none
fixed thresholds:0.5...2.2ADU/min/deg
N_data plotted:18
[click plot for closeup]
Plot 2
data source:sphere_ifs_background
(QC1 database)
dataset:qc_PersdDeg
average:none
fixed thresholds:0.5...2.0ADU/min/deg
N_data plotted:17
[click plot for closeup]
Plot 3
data source:sphere_ifs_background
(QC1 database)
dataset:qc_PersdDeg
average:none
fixed thresholds:0.5...2.0ADU/min/deg
N_data plotted:36
[click plot for closeup]
Plot 4
data source:sphere_ifs_background
(QC1 database)
dataset:qc_PersdDeg
average:none
fixed thresholds:0.5...1.8ADU/min/deg
N_data plotted:22
[click plot for closeup]
Plot 5
data source:sphere_ifs_background
(QC1 database)
dataset:qc_PersdDeg
average:none
fixed thresholds:0.5...1.9ADU/min/deg
N_data plotted:41
[click plot for closeup]
Plot 6
data source:sphere_ifs_background
(QC1 database)
dataset:qc_PersdDeg
average:none
fixed thresholds:0.5...1.8ADU/min/deg
N_data plotted:22
[click plot for closeup]
This plot

This plot monitors the persistence in IFS background calibrations which can be generated by previously acquired IFS optical distortion calibrations. These optical distortion calibrations can leave a pinhole slice pattern in the IFS background pipeline product.

The QC parameter is simply: the median counts in the pipeline product in a window P = [770, 130 --- 850, 1440] minus the median counts in window B = [640, 1470 --- 720, 1570].

Window P (pinhole) is the area where the pinhole slice pattern can show up and window B (background) is the area off the pinhole slice pattern areas on the detector.

The absolute persistence value in ADU is divided by the DIT and multiplied by 60 to represent the ADU difference for 1 min exposure time. Because of the linear dependence to the IFS optical bench temperature relation, this value is also divided by the T_bench value, so it corresponds to 1 deg C. This finally normalized persistence value is monitored.  


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