QC PLOTS
	CURRENT	HISTORY
number of spectra, scale, offset
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.

IFS spectra position raw frame is acquired in IFU mode and shows broad band lamp spectra (an IFU flat field) to determine the identification and position of the spectra. The recipe generates one product with different extensions. Further recipes of the calibration cascade essentially append more and more extensions to this product with additional information

		Left: IFS spectral position raw frame. Right: zoom of the left image.
	Zoom into extension "PDT.WAVELENGTH" of the IFS spectral position product, showing position of the spectra and the initial wavelength range.

QC parameter counts come per per prism (2).

QC1 parameters

Trending

The format offset, the scale and the number of found spectra is trended.

History

2015-11-27:

There was a 6.2 mag earth quake on 2015-11-27, which caused a shift of the OFFSET_X values by 0.6 pixel. The non-linear relation between the offset and the optical bench temperature before the EQ event is shown as a dashed line, the post EQ empirical relations are shown as solid lines and are:

YJ: OFFSET_X(Tbench) = 4.007 + 0.111 * Tbench - 0.00848 * Tbench * Tbench
YJ: OFFSET_Y(Tbench) = -4.369 + 0.010 * Tbench - 0.00837 * Tbench * Tbench

YJH: OFFSET_X(Tbench) = 7.159 + 0.0948 * Tbench - 0.00755 * Tbench * Tbench
YJH: OFFSET_Y(Tbench) = -1.022 + 0.0372 * Tbench - 0.00726 * Tbench * Tbench

2017-04-05: The processing strategy was modified. SPOS calibrations are no longer processed using a IFS master dark. As a consequence the pipeline reports a different number of found spectra.