Kalsarp Yog is formed when all seven planets 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 of death.

According to Indian astrology, there are twelve different types of Kalsarpa yoga or Kaalsarp Dosh. Kalsarp Dosh due to its negative implications on people's life. Depending on the positioning of Rahu and Ketu, Kal Sarp Dosh or Kalsarp Yog may bring various problems in an individual's life like; delayed marriage, losses in business, lack of self-confidence, financial problems, child problems, family problems, fear of death, legal litigation and accidents to imprisonment.