Are you tagging your user sessions that are being run from the script? This would make it much easier to find them in the UI.
Another thing you can try is to filter the user sessions by "user type: synthetic" to help limit the available options by the ones generated by your script.
A note to the previous comment: Dynatrace uses the "udger.com" database for classification of real users versus robots. Synthetic is used only for our own Dynatrace synthetic solution.