OHLC Data download from Zerodha

Hello Team,

I am new to Zerodha platform,
I had few queries, please extend your help to get answer,

I want to download OHLC + Volume data of any script from your platform.
I generally use Kite Platform.

Is it possible to download data from your platform?
If yes how we can download in .csv or .xls format ?
How long is past data available?
Can I download 1/5/15 mins timeframe?
Do I need to pay any extra charges for data?

My current requirement is offline data download but in near future realtime data may required