The fraction of reads deemed informative over the entire cohort
INFO=<ID=FractionInformativeReads,Number=1,Type=Float,Description="The fraction of informative reads out of the total reads">
The FractionInformativeReads annotation produces a single fraction for each site: sum(AD)/sum(DP). The sum in the numerator is over all the samples in the cohort and all the alleles in each sample. The sum in the denominator is over all the samples.
GATK version 3.8-0-ge9d806836 built at 2017/07/29 01:40:22.