In Jainism, the term deva-tattva (देव-तत्त्व) refers to the classification or category of celestial beings, known as Devas (gods or heavenly beings). According to Jain philosophy, the universe is made up of several tattvas (fundamental realities or principles), and deva-tattva specifically refers to the category of living beings who exist as celestial beings.

The main tattvas in Jainism are:

1. Jiva (soul)
2. Ajiva (non-soul)
3. Asrava (influx)
4. Bandha (bondage)
5. Samvara (stoppage)
6. Nirjara (shedding)
7. Moksha (liberation)

Among the jivas (living souls), Jainism classifies beings into:

• Humans (manushya)
• Animals/plants (tiryancha)
• Infernal beings (naraki)
• Celestial beings (deva)

So, deva-tattva is one of the four main gati (destinies or realms of existence) where a soul can be reborn. There are four main types (categories) of devas in Jain cosmology:

1. Bhavanavasi (residential or mansion-dwelling gods)
2. Vyantara (peripatetic or wandering gods)
3. Jyotishka (stellar or luminous gods)
4. Vaimānika (heavenly gods of the upper heavens)

Summary: There are four main deva-tattvas (categories of celestial beings) in Jain cosmology: Bhavanavasi, Vyantara, Jyotishka, and Vaimānika.