How to check interference without doing drive test?

Dears experts.
I’m working on a fixed ISP LTE network. No mobility configured on the network. We have 4 sectors per site with frequency on re-use 2.
Please someone can tell me how to check interference without doing drive test ?

Check the PCI

Look for interference counters

Check the PCI

I don’t understand please.

Look for interference counters

Ok thanks.

From the statistics, you may know the strength of the interfering.

But, if you want to locate it for the whole city, you must use a high efficiency tool (a scanner).