What is yield to maturity?
The single annual rate that makes the present value of every remaining payment equal the price you are paying. It is the honest all-in return on holding a bond to maturity, because it counts both the coupons and the gain or loss between your price and the face value.
On the defaults here, a bond with a 9% coupon and five years left, bought at ₹960 against a ₹1,000 face value, has a yield to maturity of 10.04%. You get the 9% coupon on the face value plus ₹40 back at maturity that you never paid for.
