What is Pitru Dosha and how is it related to Pitru Paksha?

Pitru Dosha is an astrological concept referring to afflictions or obstacles in one’s life believed to be caused by the dissatisfaction or curses of deceased ancestors. Performing the Shraddha rituals diligently during Pitru Paksha is considered one of the most effective remedies to appease the ancestors and mitigate the effects of Pitru Dosha