Hi Tarun,
This post appears to be the same as what you posted here several hours ago. I wanted to let you know your post wasn’t being ignored, but most Slicer developers are located in North American time zones and so there are fewer responses at night and on the weekends.
I did a search on the forum to find a post similar to yours. Please review it below. It appears you might have a volume with a tilted gantry. Let us know if this doesn’t work and if you don’t find another solution on another forum post. We are here to help!