The logic was actually simple.
03 had wisdom. Even if it was merely recordings over the years, she should still know something about it. Meanwhile, she also had information of Karlis. Even if she could not analyze the reason for the forming of the steel-crystal essence rain and Chaos storm, she should still be able to tell them something about those occurrences.
Meanwhile, the location where the Aragami gathered should be much more straightforward— Aragami were the followers, descendants of the Evil God. The locations that they gathered were either their own lair or [Dimensional Passages]. They would gather there because they were merely waiting for the right opportunity to invade other worlds.