Hi Soumya,
I can give you 30-min data of selected 143 scrips / indexes. Their names as per enclosed file. Tell me if 30-min & of only 143 scrips will help you.
Also, the data is either in text format (columns : date, time, open, high, low, close, volume) or *.dat file which can be opened in MetaStock directly. So I am not sure if you can use it. The starting year for these scrips is either 2003-04-05,as the case may be... so, you will have to take trouble for filtering for the dates you want
The zipped size is @14MB for *.dat files as well as for text version. So, you can PM me your email id, if this data is helpful to you.
With regards,
Abhay