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          | Plot ?
 | Symb ?
 | Source *
 | Average    ? | Thresholds ? | N_ data
 | QC1 parameter
 | Data downloads
 | Remarks |  
	  | method | value | unit | method | value |  
| 1 |  | QC1DB | none |  | ADU | none |  | 22 | qc_persistence | this |
    last_yr |
    all | setup: DIT=2, NDIT=40, Nondest |  
| 2 |  | QC1DB | none |  | ADU | none |  | 25 | qc_persistence | this |
    last_yr |
    all | setup: DIT=4, NDIT=20, Nondest |  
| 3 |  | QC1DB | none |  | ADU | none |  | 22 | qc_persistence | this |
    last_yr |
    all | setup: DIT=8, NDIT=25, Nondest |  
| 4 |  | QC1DB | none |  | ADU | none |  | 16 | qc_persistence | this |
    last_yr |
    all | setup: DIT=16, NDIT=20, Nondest |  
| 5 |  | QC1DB | none |  | ADU | none |  | 22 | qc_persistence | this |
    last_yr |
    all | setup: DIT=30, NDIT=15, Nondest |  
| 6 |  | QC1DB | none |  | ADU | none |  | 6 | qc_persistence | this |
    last_yr |
    all | setup: DIT=64, NDIT=20, Nondest |  
          |  |  
          | *Data sources: QC1DB: QC1 database; LOCAL: local data source |  
| Plot 1 scores: not implemented
 |  | data source: | sphere_ifs_background (QC1 database)
 |  | dataset: | qc_persistence |  |  | average: | none |  | thresholds: | none |  | N_data plotted: | 22 |  | [click plot for closeup] | 
| Plot 2 scores: not implemented
 |  | data source: | sphere_ifs_background (QC1 database)
 |  | dataset: | qc_persistence |  |  | average: | none |  | thresholds: | none |  | N_data plotted: | 25 |  | [click plot for closeup] | 
| Plot 3 scores: not implemented
 |  | data source: | sphere_ifs_background (QC1 database)
 |  | dataset: | qc_persistence |  |  | average: | none |  | thresholds: | none |  | N_data plotted: | 22 |  | [click plot for closeup] | 
| Plot 4 scores: not implemented
 |  | data source: | sphere_ifs_background (QC1 database)
 |  | dataset: | qc_persistence |  |  | average: | none |  | thresholds: | none |  | N_data plotted: | 16 |  | [click plot for closeup] | 
| Plot 5 scores: not implemented
 |  | data source: | sphere_ifs_background (QC1 database)
 |  | dataset: | qc_persistence |  |  | average: | none |  | thresholds: | none |  | N_data plotted: | 22 |  | [click plot for closeup] | This plot
| Plot 6 scores: not implemented
 |  | data source: | sphere_ifs_background (QC1 database)
 |  | dataset: | qc_persistence |  |  | average: | none |  | thresholds: | none |  | N_data plotted: | 6 |  | [click plot for closeup] | 
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. 
 
 
This kind of monitoring was introduced 2010-01-28. 
IFS_DARK master frames are not used to calibrate science observations, only
the ancillary IFS_DARK product IFS_STATIC_BADPIXEL is used. IFS_BACK
calibrations are used to calibrate science observations.  
        
       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
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