Chup Tazia is the name in India

India

India , officially the Republic of India , is a country in South Asia. It is the seventh-largest country by geographical area, the second-most populous country with over 1.2 billion people, and the most populous democracy in the world...

 and Pakistan

Pakistan

Pakistan , officially the Islamic Republic of Pakistan is a sovereign state in South Asia. It has a coastline along the Arabian Sea and the Gulf of Oman in the south and is bordered by Afghanistan and Iran in the west, India in the east and China in the far northeast. In the north, Tajikistan...

 given to an annual religious procession held by Twelver Shia Muslims to commemorate the death of Imam Hasan al-Askari

Hasan al-Askari

Hasan al-‘Askarī was the eleventh of the Twelve Imams. His given name was Hasan ibn ‘Alī ibn Muhammad...

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The processions are held on the 8th of Rabi' al-awwal

Rabi' al-awwal

Rabi' al-awwal is the third month in the Islamic calendar. During this month, Muslims around the world celebrate Mawlid - the birthday of the Islamic prophet Muhammad. Sunni Muslims believe the exact date of birth of Muhammad to have been on the twelfth of this month, whereas Shi'a Muslims believe...

, according to the Islamic calendar

Islamic calendar

The Hijri calendar , also known as the Muslim calendar or Islamic calendar , is a lunar calendar consisting of 12 lunar months in a year of 354 or 355 days. It is used to date events in many Muslim countries , and used by Muslims everywhere to determine the proper day on which to celebrate Islamic...

. The procession is usually regarded as the last procession of the mourning period that begins in the Islamic month of Muharram

Mourning of Muharram

The Mourning of Muharram is an important period of mourning in Shia Islam, taking place in Muharram which is the first month of the Islamic calendar. It is also called the Remembrance of Muharram...

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The procession under the name of 'Chup Tazia' is believed to have originated in the Indian city of Lucknow

Lucknow

Lucknow is the capital city of Uttar Pradesh in India. Lucknow is the administrative headquarters of Lucknow District and Lucknow Division....

 before spreading to other parts of South Asia

South Asia

South Asia, also known as Southern Asia, is the southern region of the Asian continent, which comprises the sub-Himalayan countries and, for some authorities , also includes the adjoining countries to the west and the east...

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In this procession the mourners usually carry agarbatti (incense stick) and walk silently accompanying the zaree (coffin).

In Hyderabad (India) the procession starts from Dabeerpura Flyover and reaches Alawa-e-Sartouq Mubarak at Darushafa which is a Shia Majority area in hyderabad just before evening prayers (maghrib prayers). At this place a short majlis is arranged and after this majlis the black flags which symbolises sorrow is removed and red flags are hoisted which symbolises the Joy. This changing of flags takes place as since the next day the ninth of Rabi al awwal is festival day (Eid e Zehra s.w.a). Moreover it is the belief of Shia Islam that we have to be happy when Ahlebait a.s (family of Prophet Mohammad a.s. specifically the Panjetane paak a.s) is happy and we have to be sad when they are.

The literal meaning of Chup Tazia is as follows :
Chup means Silence, Tazia means procession in which Coffin (tazia) is carried.
Chup Tazia can be defined as a procession carrying coffin in which everybody is silent.