I am trying to identify genes that are overall considered to be "actively transcribed" in my cell line of interest for some downstream analysis.
What would the approach be for defining this subset of active genes from an RNA-seq experiments? Any genes with > 1 mapped fragment? Is there a minimum fpkm you would use? or are there some statistics that I can use to identify with some degree of certainty genes that are mostly active in my cell line?
FYI, I am not doing a comparative experiment to identify DEGs, just trying to get a baseline of a group of genes that I can safely considered to be "active" in my cell line.