One way for traders to quickly check how an index is doing is to look at candlestick strength - is the index seeing more bullish candlesticks than bearish ones? Candlestick strength is calculated as the bullish-bearish difference or (number of bullish candlesticks - bearish candlesticks). +1 or more in strength score suggests a more bullish index, and -1 or lower means a more bearish index. 

The screener for example, currently shows the FMCG index as more bullish than others, while BSE Tech has more bearish candlesticks. Subscribers can set alerts on these screeners to get updates as they change and indices enter and exit.