433 is a really good score in CUSAT CAT. You will probably get a rank under 2000-5000. If you are a Keralite with community reservation, then you can get a really good chance to choose a course of your preference. Most people don't have CUSAT as their top choice, so a lot of those who scored below 1000 ranks would most likely opt for other courses. Because of this, you will get a medium to high chance in securing a seat a CUSAT.