Reports for getting list of datapoints

Is there way to get the list of datapoints/datasources for a specific device group. 

The are situation where we need a list of things that we monitor for a specific device group. we can use alert threshold report but it also has its limitation in terms of how many items it can look at. 

for eg this is the error when we use alert report, --> The reports delivered as a CSV are limited to a maximum of 500000 items. This report attempted to include 553405 items. Please reduce items by changing filters to this report.