What is DU CSAS?
DU’s Common Seat Allocation System (CSAS‑UG) is the digital platform where aspirants for undergraduate admission apply, list their preferred courses and colleges, and receive seat allocations based on their CUET‑UG scores, reservation categories, and preferences
How It Works: Step‑by‑Step Process
1. Phase I – Registration & Corrections
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June 17, 2025: CSAS portal opens for Phase I registration
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July 6–11, 2025 (till 11:59 PM): Correction window opens for candidates already registered in Phase I
2. Phase II – Preference Filling
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July 8–14, 2025 (till 11:59 PM): Students submit or modify their course‑college preferences
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July 14, 2025 (11:59 PM): CSAS automatically locks all preferences
3. Simulated Ranks & Preference Adjustments
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July 15, 2025 (5 PM): Simulated ranks are released
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July 15 (5 PM) to July 16 (11:59 PM): Candidates may adjust preferences once more
4. Round 1 – First Seat Allotment
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July 19, 2025 (5 PM): First CSAS allocation list is published on ugadmission.uod.ac.in
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July 19–21, 2025 (till 4:59 PM): Candidates must accept the seat online
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After acceptance, colleges will verify documents from July 19–22 (4:59 PM)
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July 23 (4:59 PM): Final date to pay admission fee online for Round 1
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5. Round 2 – Second Seat Allotment
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July 24, 2025 (5 PM): Vacant seats list drops
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July 24 (5 PM)–25 (4:59 PM): Candidates can reorder preferences
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July 28, 2025 (5 PM): Second CSAS allocation list is released
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July 28–30, 2025 (till 4:59 PM): Seat acceptance window for Round 2
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July 28–31 (4:59 PM): Colleges verify documents for Round 2
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August 1 (4:59 PM): Final date to pay fee for second-round admissions
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6. Next Steps
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A third round, as well as spot mop‑up rounds, may follow based on seat availability after Round 2
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Normally, DU begins classes after Round 2 concludes
Summary Table of Key Dates
| Event | Dates & Times |
|---|---|
| CSAS Phase I registration | June 17, 2025 |
| Correction window | July 6–11, 2025 (11:59 PM) |
| Preference filling (Ph-II) | July 8–14, 2025 (11:59 PM) |
| Auto-lock of preferences | July 14, 2025 (11:59 PM) |
| Simulated rank release | July 15, 2025 (5 PM) |
| Preference change window | July 15 – 16, 2025 |
| First allotment list | July 19, 2025 (5 PM) |
| Accept seat (R1) | July 19 – 21, 2025 (4:59 PM) |
| College verification (R1) | July 19 – 22, 2025 (4:59 PM) |
| Fee payment deadline (R1) | July 23, 2025 (4:59 PM) |
| Vacant seats list | July 24, 2025 (5 PM) |
| Reorder preferences | July 24 – 25, 2025 (4:59 PM) |
| Second allotment list | July 28, 2025 (5 PM) |
| Accept seat (R2) | July 28 – 30, 2025 (4:59 PM) |
| College verification (R2) | July 28 – 31, 2025 (4:59 PM) |
| Fee payment deadline (R2) | August 1, 2025 (4:59 PM) |
11. Tips & Recommendations
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Prioritize preferences wisely: Choose realistic dream vs. safe options
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Documentation early: Early upload avoids last-minute issues
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Plan finances: Budget for CSAS fees + college admission fees
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Monitor the portal daily: Especially around cut-off & allocation dates
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Stay informed: Minor shifts in timeline may occur—check DU’s official portal
12. Common FAQs
Q1: What if I miss the document deadline?
You cannot participate in any admission round.
Q2: Can I upgrade seats in subsequent rounds?
Yes—if you accept but don’t freeze, you remain eligible for better preferences.
Q3: Can I withdraw after Round 1 and still participate in Round 2?
NO.
Q4: I accepted a seat—must I report?
Yes, within 7 days—failing to do so may lead to cancellation.
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