Trending @Infosys; In hand salary

I got promoted to Technology Analyst this January when I was on maternity leave and got a revised package of 6.5LPA. My previous salary was 4.5LPA. Now according to my salary slip after the promotion, I got only an increment of 7000rs in my in-hand salary... I mean I thought it was a bonus and realised it was a promotion only when I rejoined a few days back.. Can anybody let me know how much the in-hand salary is supposed to be when you have 6.5 LPA.