Explanation:

Three important commissions have examined issue of removal of the Governor of a State

The Sarkaria Commission (1988) recommended that Governors must not be removed before completion of their five year tenure, except in rare and compelling circumstances.  This was meant to provide Governors with a measure of security of tenure, so that they could carry out their duties without fear or favour.  If such rare and compelling circumstances did exist, the Commission said that the procedure of removal must allow the Governors an opportunity to explain their conduct, and the central government must give fair consideration to such explanation.  It was further recommended that Governors should be informed of the grounds of their removal
The Venkatachaliah Commission (2002) similarly recommended that ordinarily Governors should be allowed to complete their five year term.  If they have to be removed before completion of their term, the central government should do so only after consultation with the Chief Minister
The Punchhi Commission (2010) suggested that the phrase “during the pleasure of the President” should be deleted from the Constitution, because a Governor should not be removed at the will of the central government; instead he or she should be removed only by a resolution of the state legislature.

Moreover, Thakkar commisison is related with assassination of Former PM Smt Indira Gandhi.