Inconsistent Futures Tick Data

I am collecting second by second tick data for both "NSE:BANKNIFTY23OCTFUT", "NSE:NIFTYBANK-INDEX" from Fyers API V2 websocket. I see NSE:NIFTYBANK-INDEX" giving proper tick data where as in "NSE:BANKNIFTY23OCTFUT" there are much less number of ticks and file sizes also much less. Can you please review this and let me know the reason for the same?

I am sharing a side by side comparison screenshot and some example tick files
It was not allowing to upload zip files so I have renamed those as jpg.

NIFTYBANK-INDEX.zip.jpg
2.18KB

BANKNIFTY23OCTFUT.zip.jpg
1.77KB

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