According to Hindu mythology, the snake's head is known as Rahu, and the snake's tail is known as Ketu. Rahu and Ketu are opposite each other at an angle of 180 degrees and can never meet. Rahu and Ketu are shadow planets that are invisible to the naked eye. Kalsarpa Yoga occurs when all seven planets are aligned between Rahu and Ketu. There are 12 different kinds of Kalsarpa Dosha. The dosha is caused by injuring or killing a snake, as well as hurting Lord Subramanya.

Kalsarpa Dosha can lead to many problems in one's life. There is unhappiness in the family, business loss, a miserable married life, no children, and health problems with the eyes, skin, ears, and throat, among other things. Other difficulties that one may face in life include, among other things, a delay in marriage, improper organ development in the body, litigation, and loss. These people work hard in their lives but are always unsuccessful. Those who have built houses in the area where snake pits have been demolished are constantly afflicted as long as they live in that house.
Nagaprasthistha, Nagbali, Nagathambula, Naga Puthalika Vidhi, Navagraha Shanti, and Kalsarpa Shanti are some of the pujas that can be performed to remove the Kalsarpa Dosha. The type of puja chosen will be determined by the dosha.
The Kalsarpa Dosha puja must be performed by those who are faced in performing such offerings.
Trimbakeshwar temple in Maharashtra is one of the known locations where these pujas or Shanti can be performed.
A person who kills a serpent acquires the Kalsarpa Dosha and frequently sees cobras in their dreams or in reality. The Kalsarpa Dosha has horrible side effects. The remedy for this dosha is to arrange for the ‘Sarpa Samaskara,' which is similar to the ceremonies or samaskara performed after a person's death. The Trimbakeshwar near Nashik, Maharashtra is the most sacred place for performing the Kalsarpa Shanti Puja. When these pujas are properly performed, the person is free from the dosha and can live a better and more peaceful life.