What is sheet1$xlnm#_FilterDatabase?

[mrxlsx]

Good evening,

I have a bunch of sheets in my Excel file. When I try to bring the same to the Powerpivot environment, at some point, it will show us the list of sheets available under the pop up List of Tables and Views under which all the sheets/tables are listed out to be checked and selected.
In that list, I have a sheet named "Sa**********ok". I can see the same in the List of Tables and Views as "Sa**********ok$" also "Sa**********ok$xlnm#_FilterDatabase". Where in the actual list of sheets, I have only one sheet with that name. Also I have no filters applied.

What is the significance of this sheet/table? Is this actually exists or not, if yes why this?

thanks for your effort

mrxlsx