Pitru dosh word is a combination of two words 'Pitru' which means forefather and 'dosh' means defect or imbalance in a person's kundali. Pitru dosh occurs when the position of Rahu and Ketu is uncertain in a person's birth Chart. If the ancestor's certain rituals, such as proper rites after death etc it is believed that their spirits may cause problems for their descendants. Performing this ritual helps to remove Pitru dosh from an individual's life.