I actually have no clue where this is and how to check it.
My post was directed toward UNC Monster who asked if you had checked the fuel filter.
It, as with most modern FI bikes, is integral to the fuel pump. That means you have to remove the tank plastics, remove the pump package, and then replace the filter. Not an extremely difficult task, but not as easy as looking at a translucent plastic filter hanging on the side of the bike.
BTW, a fuel filter change is not listed as part of the Ducati programmed maintenance plan for the 1100evo.