Vastu Devta Havan Test: Finding the Defective Devta Zone
Aahuti (oblations) are offered with fragrant dhoop to each of the 45 Vastu Devtas on the land; the devta at whose aahuti a sneeze, itching, crackling, harsh words, a frightening sound or crying is noticed marks the zone where the land holds a defect.
Havan fire on the land
On the land, over the zones of the 45 Vastu Devtas