@AnjaneyuluG  Pease can you carry out a PSC search for key words 'CSV extract' and you should be able to find several posts as well as the below support documents:

BIX generates CSV files with additional unwanted rows and columns

Troubleshooting BIX for on-premises environments

When extracting case data to a CSV file in Pega, if some properties contain commas, they can be misinterpreted as separate fields. To handle this, you can use a different delimiter, such as a semicolon or a tilde, instead of a comma. This can be done by adding the -l parameter when running the extraction process. This will ensure that property values containing commas are not split into separate cells, preserving the correct format of your CSV file.

The articles found on the PSC search should help you avoid the scenario you describe.