I have read the answer of the question
What is the definition of a “feature map” (aka “activation map”) in a convolutional neural network?
But I don't think that it is same as what I want. I also try to search it on google but I was not able to find that exact thing anywhere.
I have come across this word in this paper:
Grad-CAM:Visual Explanations from Deep Networks via Gradient-based Localization
It is used after CNN in forward propogation.