Heatmap and curve chart for quality assessments. (A) Subtiles having high proportion of low-quality reads are colored in red. The popup window shows the detailed quality distribution. Green arrows indicate a possible trajectory of movement of the low-quality spots. (B) Subtiles having lower density of reads are shown in cold colors. The blue-colored region seems to suffer from a technical error. (C) Subtiles are colored by average QV of reads. (D) Subtiles are colored by MapQ scores of reads. (E) Green curve shows predicted amount of data remaining after automated data deletion from the low-quality subtiles using a given quality threshold indicated by the red curve. Subtiles are ordered along the horizontal axis from low- to high-quality.