So is the figure released by government of India. Its an advanced estimate. Look at the difference over the years.
Report for Selected Countries and Subjects
So what you see in the Government of India report, is just the sum of quarterly data, and as has been the case in the past, the quarterly data doesn't add up to annual data, so annual data is always more.
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The whole point of this unnecessary comparison between the economies was brought in by you, because, Vinod said that India is a 2 trillion dollar economy now. And according to the IMF end of this fiscal year, India's economy will be $1.843 Trillion. So lets just leave it at that.
Report for Selected Countries and Subjects