Atrial fibrillation (AF) is an abnormal and irregular rhythm of the heart, where the electrical signals are generated erratically. The disorder affects roughly 34 million people worldwide. Current methods employed to detect AF sources in the heart utilize a 64-pole catheter, which has limitations in the overall AF detection strategy. This invention leverages a probabilistic algorithm that uses electrocardiograms from a multi-polar diagnostic catheter (MPDC). The movement of the MPDC is guided by input from the algorithm to target the AF source more accurately and is recorded on an electrogram.