Insight Report on RTC - Text file change metrics

Hi All,
             I designed an insight report using the "Text file change metrics" table from the DW -> This gives me details like Project.Name, Stream name, Date, File addition count,File Modification count and File Delection count. I want to display the corresponding contributor name -> but not quite sure which table would best suit this.

I used the owner name and resource columns from activity metrics table, but for certain combinations, it gives zero value for the owner name and resource column.

Please advise as to where to get the corresponding RTC User details for the file change metrics.

Thanks.