For the Katariya (Oswal) gotra, the traditionally mentioned Kuldevi is Shri Ashapura Mataji.

However, from a Jain dharma point of view:

• The main focus of worship is always Arihant Bhagwan, Siddha Bhagwan and the Tirthankaras.
• Kuldevi like Ashapura Mataji is seen only as a protective family deity / shāsan-devī type tradition, followed differently by different lineages.
• In many cases, exact Kuldevi can differ by sub‑gotra, village, or family branch, even within “Katariya”.

To be sure for your Katariya family, it is best to:

1. Ask elders (dada‑dadi, nana‑nani, etc.).
2. Check old family records or pattā/patrikā.
3. Inquire at your ancestral derasar or community trust in your native village/town.

For a simple Jain explanation of the Kuldevi concept, you can read more here: