I’ll explain what “Chauvihar” is, and then briefly touch on the rest of the phrase.

1. What is Chauvihar (Chavihaar / Chovihaar)?

In Jain dharma:

Chauvihar = after sunset, no food and no water until the next sunrise.

• It is a niyam (rule) to protect small night‑living beings (ahimsa).
• It also builds sanyam (self‑control) and helps in spiritual focus.
• Many Jains try to do Chauvihar every day, and even more strictly during Paryushan and other vrats.

You can read a very simple explanation here

---

2. “Chatt” and “7 jatra”

From Jain usage, these words can mean different things:

• “Chhath” / “Chatt” – in some regions this may refer to a particular day (6th tithi) or a special fast/vrat pattern; it is not a single, standard Jain term like Chauvihar or Upvas, and usage differs by local tradition.
• “7 yatra / 7 jatra” – “yatra” in Jain texts usually means a pilgrimage or special devotional observance, and “7 yatra” could mean seven different types of yatra/vrat followed in some local maryādā; again, this is not one fixed, pan‑Jain technical term.

Because these two parts (“chatt” and “7 jatra”) are very regional and can vary by sangh and city, they do not have one universally accepted technical definition in Jain scriptures like “Chauvihar” does.

For authentic detail on those two in your context, you would normally check:

• Your local Jain gurujis / pūjya sadhus-sadhvijis
• The printed maryādā‑patra (rule‑book) of your own derasar or panth

In summary:

• Chauvihar = strict no food, no water after sunset till sunrise.
• “Chatt” and “7 jatra” are likely local/ritual terms whose exact meaning depends on your community’s tradition, not a single standard Jain doctrinal definition.