Open Price diff between PI and NSE website data

General
1

I went to NSE --> Live Market --> Equity Stock. Then I clicked on Nifty Midcap 50. I then downloaded the file in CSV format at 14:20 hrs today (November 18, 2015). The data for SUNTV shows thus: 
Open: 384.3
High:384.3
Low:372 

I now went to PI and opened the 5mts chart of SUNTV.
Open:382.10
High:382.80
Low:382.10 

Why the difference in the OPEN value of data taken from NSE website and that from PI charts ? 

After checking out with some more like Petronet, I have realized that there is inconsistency in open price of data from PI and NSE website.  Why So ?

2

Pavan, have answered a similar question here: http://tradingqna.com/8843/technical-charts-google-finance-yahoo-finance-amibroker-match.

When market opens, there could be thousands of ticks, and technically not possible for an intraday chart on a trading platform to capture all of this. So they will most likely never match. But if you look at daily charts/EOD charts, they will match exactly with NSE data. Because end of day charts are given out by exchange after close of day, and there is only 4 points (OHLC) given.

3

Thanks Nithin.