Super filter not affected by DAX context modifiers

Hi,

Is there a way to create filters that superseed any context modifier in DAX formulas? 

Use case :

I'm creating a report from a dataset that I cannot modify.  So I don't have access to M query nor any calculated column.

I would like to ignore a portion of the dataset that is irrelevant for the whole report I'm creating.  So I can use DAX functions like CALCULATE(), ALL(), etc.  without being bothered by those extra rows from irrelevant data.  I tried to put the filter in the "Apply to all pages" section but it doesn't have the desired effect.

Thank you

--mo