[amibroker] What's a Bad Tick? What issues to look for in data feed?

Hello All I have come across the term Bad Tick a lot. Can someone tell me how a data tick can be bad? What to look for in a data feed? How to compare one feed to another? Comments, Resources/Links please. Sanjay.

Re: [amibroker] What's a Bad Tick? What issues to look for in data feed?

Hi Sanjay, A bad tick is just some erroneous information or noise that has sent through as trading data. In the data it appears as a spike that is way off the scale. It just looks unreasonable. Sometimes however traders do make mistakes or stops going off take some prices to a ridculous