Run 140908_M01841_0075_000000000-A71WR has a single tile that failed

[cbrumme]

Useful run to use for designing more detailed QC metrics in the future

After cycle ~100 tile 1107 started giving poor quality data. This can be seen in many metrics including %Q30, ErrorRate, FWHM, %Aligned_R4, Phasing_R4, Prephasing_R4

Since the unidentified problem only affected a single tile, it had little impact on the overall average value of these metrics that are currently on the QC reports.

The failure of a single tile may not impact the overall data quality of a run, however it may be indicative of a systematic problem in the instrument. It might be necessary to track certain parameters longitudinally on a per-tile basis.