Between 2002-06 the average number of sitting per year (May - April) was around 19 but since 2006 the average has dipped to around 11 sittings per year. The average number of committee sittings is around 15 per year from 2002-10. The committee met 22 times in 2002-03 while it only met 5 times in 2007-08. The average duration per sitting has been more or less equal since 2002. The committee has been spending 1 hour 20 minutes on an average on each sitting. 
* Data rounded off to nearest hour * Data calculated from May to April every year. * Data taken from the Public Accounts Committee Website & PRS.
Apropos Madhukar’s post on available information on the functioning of state legislatures, data on the number of days State Assemblies shows a mixed trend over the 2000 to 2010 period. However, most states uniformly under perform when it comes to number of days of sitting. (Spreadsheet with relevant data here) As with Parliament, state assemblies are convened at the will of the executive. In comparison to the Lok Sabha, the state assemblies perform miserably. In any given year, most state assemblies do not sit for even half the number of the days clocked by the Lok Sabha.
