ReportServer.ExecutionLog.ReportID

I'm trying to query the refresh date and time of KPIs from ExecutionLog table.

For some reason, I'm not able to link the ExecutionLog.ReportID with Catalog.ItemID to get the basic info (name,path,etc.) for KPIs or Mobile Reports, using the following simple query.

SELECT C.PATH,C.NAME,E.* 
FROM ExecutionLog E
INNER JOIN CATALOG C
ON E.ReportID = C.ITEMID


I can see the RDL names, but not the names of KPIs and Mobile Reports. It looks like the ReportID in the ExecutionLog is referring to another field based on the content type.

Can someone please help me?