generally a sleeper class coach contains 72 berths.
since your blog is not clear, nobody will be able to provide correct answers.
if you wish to know the number of vacant seats in the train, enter train number and click on seat availability, choose date and submit, the latest seat position will be known.
List of passengers are not available anywhere except...
more... in the station on the day of journey.
i have given almost all possibilities for your question. next time, be clear in your blog. thanks.