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FORS1 trending system: History Plots
Last update: 2009-04-09T07:03:24 (UT)
| now: 2022-05-27T18:03:53 (UT)  
same group: U_BESS B_BESS V_BESS R_BESS I_BESS u_HIGH b_HIGH v_HIGH g_HIGH
close window history: 2007 2008   2009   HEALTH
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Plot
?
Symb
?
Source
*
OPS?
**
Average ? Thresholds ? N_
data
QC1
parameter
Data
downloads
Remarks
method value unit method value
1 QC1DB no none   mag none   34 zeropoint this | last_yr | all Night zeropoint from e-/sec (more than 1 star)
1 QC1DB no MEDIAN 28.799 mag OFF± 0.1 27 zeropoint this | last_yr | all Night zeropoint from e-/sec (photometric nights only)
2 QC1DB no MEDIAN 0.022 mag VAL0,0.1 34 sigma_zeropoint this | last_yr | all error of night zeropoint from e-/sec
3 QC1DB no none   mag none   33 zeropoint this | last_yr | all Night zeropoint from e-/sec (more than 1 star)
3 QC1DB no MEDIAN 28.826 mag OFF± 0.1 26 zeropoint this | last_yr | all Night zeropoint from e-/sec (photometric nights only)
4 QC1DB no MEDIAN 0.034 mag VAL0,0.1 33 sigma_zeropoint this | last_yr | all error of night zeropoint from e-/sec
*Data sources: QC1DB: QC1 database; LOCAL: local text file | **OPS: to indicate that OPSLOG data are included
This plot

Trending is done only for the SR collimator. Photometric nights are selected from the Absorption Monitor. Zeropoints are per night for flux in e-/sec, not in ADU. Do not use these zeropoints for science data. They are reduced assuming a standard extinction value, which may not be correct for an individual night!  


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