Hi Krrish,
To open excel generator, please navigate to dashboard -> analysis view -> analysis -> create new excel report.
In here, you can use query builder to make your customer report with your requirement
To do so, you should understand about DB of ALM project to make your own query. Please refer to this link to download ALM project DB reference: http://support.openview.hp.com/selfsolve/document/KM00814871
I also suggest you should look up to RUN table in project DB.
Besides, you can plot your graph when in analysis view -> analysis -> graph wizard -> entity graph -> select entity runs
Please see my screenshot is attached for more detail.
Hope that is helpful for you