This is the trending plot for the localization of fibres in the GIRAFFE
flat field calibration data. We display the QC1 parameter num_fib
(PRO.SLIT.NFIBRES). The purpose of this plot is to check the number of
available fibres. A sudden deviation from the nominal behaviour indicates 
issues with broken fibres, but might also indicate pipeline problems or fibre 
illumination problems.</font><p><font size="2">

The plots are arranged per fibre system. Here we show the regular Health Check
calibrations only, taken as L543.1 setting every 3rd day in the Medusa slits,
and once a week for the IFU and Argus slits.</font><p><font size="2">

A more detailed record of the performance of each fibre, and a record of the
available/missing fibres, is available <a href="/qc/GIRAFFE/reports/FIBRE/CURRENT/Medusa1/trend_report_Medusa1_CURRENT.html">here</a>.
</font><p><font size="2">

You may want to check a raw file visually against the <a
href=/qc/ALL/ref_frames/FLAMES_GIRAFFE/html/giraffe_fibre_setup.html>reference
raw file displays</a>.