  A method is proposed for determining the properties of type Ia supernovae
from short-lived precursors -- Prompt SNIa. This method is based on the
assumption that this subtype of type Ia supernovae exploded into
low-metallicity globular clusters (GCs), and is responsible for the enrichment
of the high-metallicity subgroup of GCs and circumgalactic clouds (CGCs) with
the iron peak elements. We justify that CGCs are the formation places of GCs of
both subgroups. The accuracy of the method depends, first, on the number of
GCs, the spectra of which have been studied in detail; second, on the number of
chemical elements, the abundances of which have been worked out. Only those
elements are of interest for this method that are produced in supernova
explosions and are not produced at the previous stage of the stellar evolution.
Our estimates of nucleosynthesis in low-metallicity supernova GCs are in the
best agreement with the following Prompt SNIa model: Single Degenerate Pure
Deflagration Models of white dwarfs (WDs) burning with masses in the range from
1.30 Msun to 1.31 Msun if carbon explodes in the centre of a WD with a low
central density from 0.5*10^9 g/cm^3 to 10^9 g/cm^3.
