I am working on CDR data to find important locations of user. The data I have does not have coordinates so I will be using cell-site location as user's location. But after doing some working on data I have observed something weird in data i.e CDR of a user is generated from two different locations/towers on the exact same time, those towers are spatially very far, around 8.5km, and there are also other towers in between. You can see the snaps below.
Is it possible that this CDR records, the tower_id from which the user was called i.e it records only the id of only outgoing tower??