Hi Pramod,
According to the log entries that you have sent here, it seems that almost all the time is related to styles in your workbook.
As you mentioned that it is also taking time to open it, could you please check the amount of styles of your workbook?
Please refer to SAP note below:
>> 2076788 - Workbook takes several minutes to open or crash when Analysis for Office is activated
The note also shows how to remove the custom styles from the workbook, if this is your scenario.
Cheers,
Filipe Zeuch