His grandfather was a palace official and commander of the Mahajanga garrison in the Franco-Malagasy War of 1883–1885, and his father the governor of Iboina and deka (aide-de-camp) to Prime Minister Rainilaiarivony.

He served as a medical officer at the Assistance médicale indigène [fr] from 1909–1922—during this time, in October 1915, he joined Vy Vato Sakelika (transl.

Reelected again on November 10, 1946, Raseta returned to France on March 9 of the following year and was named to the new National Assembly's Committee on the Family, Population, and Public Health.

Following the outbreak of the Malagasy Insurrection on March 29, 1947, he questioned the government on its Madagascar policy on May 6, but on May 20 was called before a commission of inquiry, headed by Maurice Viollette, on accusations of involvement in the revolt.

[a] Raseta was deported to the Comoros, then transferred to Calvi in October 1950, before finally being released on grounds of ill health on August 6, 1955, and put under house arrest in Grasse, then Cannes.

Still influential in nationalist circles, he joined Jacques Rabemananjara in a 1955 appeal for nationalist unity in the 1955 provincial elections, supported Stanislas Rakotonirina's successful 1956 bid to become the first elected mayor of Antananarivo, and in 1958 lent his endorsement to the newly founded Congress Party for the Independence of Madagascar (AKFM), a pro-Soviet Communist party opposed to Philibert Tsiranana and the French Community.

Finally managing to return to his home country in July 1960, he joined the AKFM and ran for a seat Madagascar's own National Assembly on the party's list in Antananarivo, defeating his former MDRM ally Joseph Ravoahangy and becoming the body's oldest member.