How can the president of India be impeached?

The president may be removed from his office before the expiry of his term, for “violation of the Constitution” by the process of impeachment. The procedure of the impeachment is as follows:

For impeachment, a charge against him may be initiated by either house of parliament. The resolution can be moved only after giving at least 14 days written notice signed by not less than 1/4^th of the total number of members of the House. The resolution must be passed by a majority of not less than 2/3^rd of the total membership of the House. The charge is then investigated by the other house. The president has right to appear and to be represented at such investigation. If the majority declaring that the charge is proved, such resolution majority declaring that the charge is proved, such resolution shall have the effect of removing the president from his office  from the date on which the resolution is so passed.