If you're talking about users logging in, there are the audit logs in the Admin space. You can format the CSV that outputs to then upload into a data pool and make it part of a data model. It won't track accessing analyses or assets, but it will let you know when a user logs in or creates certain things

Yes you can. Celonis provided API endpoints to extract this information, which can again be imported via the extraction builder. For more information, read the docs: Audit Log API<>Celonis EMS connection

For logins, check: Swagger UI (celonis.cloud)

Tracking usage is only possible for teams with more than 80 users, see: Platform Adoption (celonis.com)