No, atta is not considered to be refined flour. As per FSSAI regulations, atta is term used only for wheat flour, whereas the term refined wheat flour is to be used for maida. Hence, the term atta when used singly or as ingredient implies that it is wheat flour and not maida.
A use by date is printed on the pack. This means that within the use by date, all the product characteristics of atta will be intact, post which it may not retain all the characteristics.
Packaged atta generally undergoes minimal processing ensuring hygienic conditions and bran retainment. Packaging helps convenient usage and maintain good quality. Atta or wheat flour is a natural source of protein, fiber and other micronutrients such as Vitamin B and iron and helps contribute to daily energy requirements.