Hi @aditya-gundawar, thanks for your query. In order to run a calibration, you will need to launch this from the Tobii System Tray Icon using our own Interaction Software. Certainly, a calibration is essential for each new profile.
You should be able to check the calibration accuracy using the Tray Icon under ‘improve calibration’ on your user profile. Could you confirm that the accuracy is OK and how does it relate to your Core SDK output? Recall that gaze co-ordinates in Core SDK are provided in relative terms from (0,0) to (1,1) so you will need to multiply the results by the monitor resolution to obtain the data in pixels.
If you could kindly provide further details in your reply, we will do our best to assist you further. Best Wishes.