This is the trending plot for the GIRAFFE QC parameters derived from BIAS frames.<p>

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

Find more information about GIRAFFE BIAS frames 
<a href="/qc/GIRAFFE/qc/bias_qc1.html">here</a>. <p>

Other QC parameters related to detector properties (like contamination,
linearity, gain) are trended 
<a href="/qc/GIRAFFE/qc/iflat_qc1.html">here</a>.
