QC PLOTS
	CURRENT	HISTORY
counts raw flat
QC1 database (advanced users): browse | plot
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IFS imaging flats consist of two raw frames. One with a low exposure time and one with a high exposure time. The pipeline recipe decomposes the master imaging flat field in four components:

• a spatially high frequency fixed pattern noise product tagged DFF for differential flat field
• a spatially low frequency fixed pattern noise product (a smoothed flat) tagged "large scale"
• a preamplifier map product showing the extracted mean responses per amplified channel (vertical stripes)
• a bad pixel map.

For the YJ prism the flats come in four setups: one broad band lamp and three narrow band laser lamps,
for the YJH prism the flats come in five setups: one broad band lamp and four narrow band laser lamps.

The next steps of the calibration cascade require the DFF products of the brand band lamp and the laser lamps and the pre-amplifier map product from the broad band lamp.

	IFS high exposure time broad band lamp raw frame for the YJH prism.
		Left: IFS DFF imaging flat product showing the spatially high frequency fixed pattern noise. Right: zoom.
	IFS imaging flat large scale feature (smoothed) product.
	IFS imaging pre-amplifier map product.

QC parameter counts come per raw frame (2), per lamp (5) and per prism (2).

QC1 parameters

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The IFS lamp counts are trended