As per my understanding, it means your E-CAS has been activated and your application is just at "Application Received" stage (although your link says things little different). If it were in-process, it would say so. So far, only 1 of 2014 applicants reported that his application is in-process, there are 4999 remaining from 2014, 5000 from 2015 and then you guys.
Once CIC accepts your payment and puts your info into electronic system (E-CAS), it mean you passed initial checks. CIC normally do not reject files after this if they find issues. They will contact you if they want something. Failure to provide additional documents within the time-frame can result in rejection.