Hello Santanu, Here i have given few points what i am using in work this may helpful to you,

1. Give appropriate decision weights (profit matrix)

2. Undersample on the majority class or "good" records.

3. Running a decision tree on the sample.

but you have not specified on which data you are working.

I think referring to the following article will be useful.

M. Sokolova, G. Lapalme, A systematic analysis of performance measures for classification tasks, J. Inform. Process. Manage. 45 (2009)

427–437.

Regards