On this page of our game guide to Batman: Arkham Knight you can find a description which explains how to return to the Clock Tower to review the Batwings scans. It's a simple and fast task in which you have to complete a few basic steps on the computers and listen to some information.
Jump into the Batmobile and head to the previously visited Clock Tower. Once you get there, leave the vehicle and climb up to the peak of the tower in order to use the secret entrance. Interact with the bust in order to reveal the computer, and use it. Hear out the conversation with Alfred, then with Henry Adams. The latter reveals that in the meantime Harley Quinn attacked Panessa Studio and plans on releasing the Joker Infected.