Interest rate futures trading

Is there anybody out there trading in interest rate futures / govt bonds. How is the liquidity and bid/ask spread is like?

So these are the active interest rate futures on NSE and their closing market depth snapshot as of today:

Lot size of interest rate futures is 2000.

  1. 679GS2027


This is the chart for the last 10 trading days.

And this is the margin required to buy 1 lot:

  1. 697GS2026


  1. 759GS2026


Only the first one seems to be actively trading. Although there were bids and asks for the second and third one today, no trades took place because the spread was too far apart.