I had submitted my gate application ,but it is showing that thestatus is "you have take an action to rectify"and the application us under process
You do not need to worry if your application status shows that 'you have taken action to rectify'. Just wait for the approval by the exam authority. If any of your details like photo/signature/documents need to be rectified, you will be informed through a mail/sms. So for the time being, just wait.