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| QC PLOTS |
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CURRENT |
HISTORY |
| gain [ e-/ADU ] |
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| read noise [ e- ] |
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| counts [ ADU ] |
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| lamp flux [ ADU/sec ] |
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| QC1 database (advanced users):
browse
|
plot
|
Click on CURRENT to see the current trending (Health Check).
Click on HISTORY to see the historical evolution of the trending. |
QC1 parameters
| parameter |
QC1 database: table, name |
procedure |
gain
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vircam_gain, qc_gain
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- The gain is a conversion factor between the acquired electrons (e-) and the measured counts (ADU). The unit is e-/ADU. Two dome flats of the same flux level are subtracted from each other to minimize the structural noise. From the remaining random noise and the read noise derived from the dark frames the gain is obtained. |
QC1 parameters
| parameter |
QC1 database: table, name |
procedure |
| read noise |
vircam_gain, qc_readnoise |
- The read noise is derived from two consecutive dark frames. It is given in electrons (e-). |
QC1 parameters
| parameter |
QC1 database: table, name |
procedure |
| counts |
vircam_gain, qc_counts |
- The counts acquired in the flat frame in ADU . |
| lamp flux |
vircam_gain, qc_lflux |
- The counts acquired in the flat frame divide by ( DIT * NDIT), given in ADU/sec |
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