Detchar task needs to check iDQ OK channel
Currently the automated iDQ check in the detchar task looks at the IDQ_FAP timeseries with two seconds around a superevent. If it finds a very low value of the FAP timeseries it reports a problem. The issue is that it does not check the IDQ_OK timeseries which is used to indicate whether iDQ was running correctly. The logic of the task needs to be changed; it should only report a problem if there is a time when IDQ_FAP is below the threshold AND IDQ_OK = 1.