On the upside, the index might try and test 22050. If it manages to sustain above 22000 and is followed through with volume-based buying, the index will try and move to 22200 and 22400 ultimately.
On the downside, there is good support at 21500. A sign of consolidation at 21500-21600 could be taken as a signal of accumulation and one can look to go long at these levels for 21800-22000. However, a strong breach of 21500 will take the index down to 21000, a major support.
The week's expiry range should remain between 21000-22000.