Below link will take you to RTGS FAQs, which are very relevant for us.
http://www.rbi.org.in/scripts/FAQView.aspx?Id=65#
Q14. How much volume and value of transactions are routed through RTGS on a typical day?
Ans. On a typical day, RTGS handles about 60,000 transactions a day for an approximate value of Rs.2,700 billion.