Kindly note that for tax filing, you can refer 'Portfolio' report after logging to Back Office portal by selecting Capital Mkt: 17-18 and select date as : 31-03-2018 in 'As on Date' option available in 'Report Type'.
** Please note for bonus shares date of allotment of bonus shares would be considered as date of acquisition and the cost of acquisition would be NIL . In case of split date of acquisition would be same as date of acquisition of original shares . Further cost of acquisition would be divided proportionately to the original and split shares.
For more details about Taxation, kindly refer article "Taxation Simplified for Traders".