I trade in a similar style as you.How do you use options chains.What data you find most interesting?i mostly look at IV for reversal confirmation and OI addition for continuation.for ex today morning OI showed little addition on put side and IV were also not high for calls so bullish move was big suspect.
These are the basic things i look for-
1)Iv of options 2% above current and below present nifty strike price. ( to check breakout or down )
2) addition of oi on dropping prices for ex if theres an oi addition of more than 10% on a put or call while the prices are declining its bearish for me and versa.
In short to give a better example lets look at nifty 7800 ce for today at market close. It has added almost 20% new oi on a day when it has lost 20% value. So i consider this bearish. Same for 8000 ce i saw oi being added in the morning in huge quantity again on declining prices.
So in my views 8000 call for this month is being sold. In my experience most of the time option writers move the market to their best benifit. With 8000 call being written in such huge quantity lots of money will be lost if nifty went there. The people who loose this money arent retailers ( mostly ) calls and puts are written by institutions ( majority ) so id always be on the side of the bigger money.