Answer

No.

Explanation

In Jain Dharma, Jyotishka Deva is one of the categories of devas in the celestial realm. It is not specifically described as “very rare” in a unique way. What is generally considered rare is getting birth in deva-gati itself, especially from the human perspective.

Spiritual Understanding

Jainism teaches that human birth is especially valuable for liberation. Even a deva birth, though auspicious, is not the highest goal because it is still within samsara.

Takeaway

So the strict answer is: No, not uniquely rare.