Keeping Vajrasattva Thangka at home will help to purify bad karma and to generate wisdom.
Vajrasattva is called the all pervasive sovereign of both the outer and inner
tantras. He is also known as the Lord of the Body, Speech, Mind, Qualities and Activities of all the Buddhhism. Vajrasattva is the supreme embodiment of the whole tantric mandala and lord of all the Buddha families. The Buddha families display the aspects of primordial wisdom which pervade the world in every direction. The major radiations are known as the five wisdoms, which are symbolized by the five Buddha families.
Visualize Vajrasattva in union with his wisdom Consort, who is known as Dorje Nyema in Tibetan or Vajra Garvi in Sanskrit. In his right hand, he holds a vajra vertically at the level of his heart center.