ITEM            Bad 
ITEM_TITLE      Bad pixels
ITEM_ANAME      bad

	      <p>The number of bad pixels in GIRAFFE BIAS frames is monitored here.
         The pipeline delivers proper values only since
	          2008, for the new CCD. </p>

TITLE		QC1 parameters

TABLE_NAME	qc1
TABLE_TYPE	QC1_TABLE
TABLE_ROW1	PRO.BPM.NPIX in bpm product SEP giraffe_bias..bpm_npix 

TITLE	Trending

	      <p>Box <b>6</b> of the <a href="/qc/GIRAFFE/reports/HEALTH/trend_report_BIAS_HC.html">trending
	            plot</a> show the number of bad pixels which is usually between 0 and 200 in the
	            new CCD. </p>

TITLE	History
	          The pipeline delivered proper values only since
	          2008, for the new CCD. The number of bad pixels for the old
	CCD is much higher than currently, due to the bad columns. It would need to be
	corrected for those columns in order to gain significance.

TITLE	Scoring&thresholds
	N_badpix is scored, with a loose upper threshold. If flagging red,
	there is a serious detector issue. There are no reference values available.

TITLE	Algorithm
Pipeline recipe.