[page auto-refreshes after 60 sec]            [press Ctrl+R to enforce refresh of scores and dates]
[an error occurred while processing this directive] [an error occurred while processing this directive]
MIDI trending system: HEALTH CHECK plot
Last update: 2008-12-09T07:44:08 (UT)
| now: 2024-07-17T11:02:22 (UT)
scores active INFO USERS-GUIDE MORE
last OPSLOG data:
2008-12-09
Plot: 1 2 3   latest_files
[an error occurred while processing this directive]
N_data: number of recent OPSLOG entries plotted here
N_data: 13 - - availability
Print: Information and research: News:
- png file  
Plot
?
Symb
?
Source
*
OPS?
**
Average ? Thresholds ? N_
data
QC1
parameter
Data
downloads
Remarks
method value unit method value
1 oLOCAL yes (13) none   NONE VAL0,20 111 median_RON n/a  
2 oLOCAL no none   NONE VAL30,40 111 temp_cryo n/a  
3 oLOCAL no none   NONE VAL250,300 0 temp_mean_bs n/a  
*Data sources: QC1DB: QC1 database; LOCAL: local text file | **OPS: to indicate that OPSLOG data are included
This plot

The readout noise of MIDI is monitored by taking a full-frame exposure with a large number of frames, with the MIDI shutter closed and with a minimum DIT. The standard deviation of the pixel level over the frames is computed by the pipeline for each pixel, as well as the median of the standard deviation over all the pixels and all the frames, which is plotted here (expressed in detector ADUs).  


General information

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

If applicable, the latest values from Paranal ops logs are plotted as blue dots. More information about those values, including a download option, is available in the OPS column.

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