I still don't see it. Please post your source.
As you are using NestTrader, then open data table of NIFTY 50 and can check it yourself.
Though following is the copy of data table snapshot
Nifty 50 31/05/2017 09:15 9637.25 9637.25 9622.6 9622.6 0
Nifty 50 31/05/2017 09:16 9623.6 9628.6 9623.6 9627.6 0
Nifty 50 31/05/2017 09:17 9628.2 9634.55 9628.2 9629.85 0
Nifty 50 31/05/2017 09:18 9630 9630.1 9621.65 9622.5 0
Nifty 50 31/05/2017 09:19 9622.95 9623.15 9618.3 9618.9 0
Nifty 50 31/05/2017 09:20 9619.6 9624.85 9619.2 9619.3 0
Nifty 50 31/05/2017 09:21 9618.6 9619.7 9614.75 9616.55 0