Shankar,
1. Attendance Register/Details: They are allowed. Please see:
http://cic.gov.in/CIC-Orders/Decision_18032008_10.pdf http://cic.gov.in/CIC-Orders/Decision_22112007_57.pdf http://cic.gov.in/CIC-Orders/Decision_16102007_14.pdf
2. Property Returns: Also allowed.
http://cic.gov.in/CIC-Orders/Decision_20032008_14.pdf
3. Date of Marriage: Although marriages are very much a "public activity" in India, unfortunately Date of Marriage is "personal information" and cannot be connected to any public activity of the officer.