This is the FULL trending plot for the GIRAFFE QC parameters derived from BIAS frames. Only 'normal' readmode is displayed here.

These plots describe:
1. the BIAS level in masterbias frames,
2. the read noise (RON) of a single raw frame,
3. the read noise (RON) of a master frame,
4. the collapsed structure of a masterbias in X direction,
5. the collapsed structure in Y direction,
6. the number of bad pixels.

The label 'new' refers to the CCD replacement in May 2008. Corresponding data from the GIRAFFE master calibration (re)processing project are available for the first two years and are marked separately.

Find more information about GIRAFFE BIAS frames here.