[ Curiosity is usually one of Data's top motivations, so of course it's this that brings him to Sector 0 today. After all, what is there to do but investigate? Whatever the wardens have done, it's here regardless of whether he goes to look into it or not.
Upon locating his own pictures, there are mixed responses from him. (His emotion chip now being, once again, active.) You may see him examining any of the images - his own or others - or, of course, approach him about his own that you may have found. ]