The Filters tab (Figure 41) provides statistics on the read quality filters of the GS Run Processor application used to process the data of the sequencing Run. The statistics are displayed, per PicoTiterPlate Device region and in aggregate, for either the sample library reads (sequencing key TCAG or GACT) or the Control DNA reads (sequencing key GACT, CATG or ATGC; see Section 7.1 for details). The filtering statistics displayed are: Key Pass, Dot, Mixed, Short Quality, and Short Primer. The application of these filters is discussed in detail in Section 1.4.2.

This tab also provides an analysis tool for Library Titration Runs carried out using the GS 20 or GS FLX standard chemistries. See Section 7.2 for more details.

For the Filter tab data to be displayed, the region.cwf files (or, for the GS FLX standard chemistry, the 454QualityFilterMetrics.txt file) must be present in the data processing directory of the selected Run.