What are the Premiere Sequence settings (video format), and what are the dimensions of the graphic file? Are you scaling the graphic in PS or Pr? In Premiere Program Monitor window, is quality set to FULL? Right-click in there and check
My sequence : 720 x 576 (1.0940)
Image dimension : 996 x 356 , then i scaled down to 25 %
i did both scalling in PS and Pr but still i got this jagged edge, and yes the quality in Program Monitor has been set to full quality
Post a screen grab, so we can see the bad logo.
Your program monitor is set to "Fit". Change it to 100% and then see how you feel about it.
You cannot judge the quality of the image using the PP built-in monitors. They are not designed to show you an accurate image. You need to either hook up and calibrate a real TV to your computer for proper monitoring, or you need to export and take that to a real TV, properly calibrated. Until that's done, there's no way to know if you actually have an issue here.