  Fast radio bursts (FRBs) are highly dispersed millisecond-duration radio
bursts, of which the physical origin is still not fully understood. FRB
20201124A is one of the most actively repeating FRBs. In this paper, we present
the collection of 1863 burst dynamic spectra of FRB 20201124A measured with the
Five-hundred-meter Aperture Spherical radio Telescope (FAST). The current
collection, taken from the observation during the FRB active phase from April
to June 2021, is the largest burst sample detected in any FRB so far. The
standard PSRFITs format is adopted, including dynamic spectra of the burst, and
the time information of the dynamic spectra, in addition, mask files help
readers to identify the pulse positions are also provided.
