  Solar flares, with energies ranging over several orders of magnitude, result
from impulsive release of energy due to magnetic reconnection in the corona.
Barring a handful, almost all microflares observed in X-rays are associated
with the solar active regions. Here we present, for the first time, a
comprehensive analysis of a large sample of quiet Sun microflares observed in
soft X-rays by the Solar X-ray Monitor (XSM) on board the Chandrayaan-2 mission
during the 2019-20 solar minimum. A total of 98 microflares having peak flux
below GOES A-level were observed by the XSM during observations spanning 76
days. By using the derived plasma temperature and emission measure of these
events obtained by fitting the XSM spectra along with volume estimates from
concurrent imaging observations in EUV with the Solar Dynamics
Observatory/Atmospheric Imaging Assembly (SDO/AIA), we estimated their thermal
energies to be ranging from 3e26 to 6e27 erg. We present the frequency
distribution of the quiet Sun microflares with energy and discuss the
implications of these observations of small-scale magnetic reconnection events
outside active regions on coronal heating.
