Hello Anusha, 

The certificate verification for GATE qualified candidates across all branches is supposed to happen tentatively in the third week of July 2019. Since it didn't happen yet, you can contact the designated authorities if you have any concerns regarding the date. The exercising of options for GATE qualified candidates are also supposed to happen tentatively in the third week of July 2019.

Check this link out for addresses to the helpline centres - 

https://engineering.careers360.com/articles/ap-pgecet-counselling

All the Best!