# DRAGEN FastQC

### DRAGEN FASTQC Plots

| Plot                               | Description                                                                                                                                                                                                                                                                                        |
| ---------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Base Quality by Position           | Phred-scale quality value for bases at a given location                                                                                                                                                                                                                                            |
| Mean Base Quality by Position      | Average Phred-scale quality value of bases with a specific nucleotide and at a given location in the read                                                                                                                                                                                          |
| Read Length Distribution           | Total number of reads with each observed length                                                                                                                                                                                                                                                    |
| Read Quality Distribution          | Total number of reads with each observed average Phred-scale quality score                                                                                                                                                                                                                         |
| %GC Content                        | Percentage of sequences with each GC content across the whole length of each sequence compared to a modelled normal distribution of GC content                                                                                                                                                     |
| Read Quality by %GC Content        | Average Phred-scale read mean quality for reads with each GC content percentile between 0% and 100%                                                                                                                                                                                                |
| Ambiguous Base Content by Position | Percent ambiguous bases at a given location                                                                                                                                                                                                                                                        |
| Base Content by Position           | Percent of bases of each specific nucleotide at given locations in the read                                                                                                                                                                                                                        |
| Adapter Content by Position        | Percentage of the proportion of your library which has seen each of the adapter sequences at each position. Once a sequence has been seen in a read it is counted as being present right through to the end of the read so the percentages you see will only increase as the read length increases |