The ancient temple of Chandragiri is popularly known as Kizhur Sastha Temple. In the Kizhur Sastha Temple a festival known as Pattu Utsavam is held during the month of November. During this festival groups of singers join together for a live performance. They sing in glory of the god.

The eminent personalities of the Kazhakams of Saliyas jointly known as Pathinula Nagaram participate in this festival. All the kazhakams from Pattuvam to Panamboor involve themselves in this glorious ceremony. This happens in the second Saturday of November. The Pattu Festival in Kizhur Sri Sastha Temple is held every year.

Pattu Utsavam has a history. It is a tribal festival that derives its origin from the Nilambur Kovikalam, which is a temple in ruins. This temple had been dedicated to Lord Shiva's son. The form of the principle deity here had been Lord Kirata, one of the Avatars of Lord Shiva. The devotees were actually the tribal people who celebrated the Nilambur Pattu Utsavam. It continued for six days and was held in January. Now the temple is at the verge of destruction. But still people remember Lord Shiva and his benevolence so they worship him. From here the Pattu Utsavam has emerged.

The temple of Kizhur Sri Sastha is renowned for the Pattu Utsavam. This is the principle festival here. Offerings are made to Lord Shiva during this time. Men and women wear colorful costumes and flock to the premises of the temple. They not only offer worship but also appeal for a bright future and a happy existence. Lord Shiva is very benevolent and is also very fond of his disciples. He is also said to relieve them of all worldly pains and injustices.