Kaalsarpyog is formed when all seven planets are come between Rahu and Ketu. A complete Kalsarp Yog is formed when exactly half the natal chart is unoccupied by planets. Exclusion of even one single planet outside the Rahu-Ketu Axis does not signify Kalsarp Yog. An individual taking birth in this Kaalsarpyog suffers tensions, fear and insecurity, and has a constant fear from death. This yoga is considered to be more malefic than any other malefic yoga or dosha.