  We investigate the possibility of detection of the VHE gamma-ray counterparts
to the neutrino astrophysical sources within the Neutrino Target of Opportunity
(NToO) program of CTA using the populations simulated by the FIRESONG software
to resemble the diffuse astrophysical neutrino flux measured by IceCube. We
derive the detection probability for different zenith angles and geomagnetic
field configurations. The difference in detectability of sources between
CTA-North and CTA-South for the average geomagnetic field is not substantial.
We investigate the effect of a higher night-sky background and the preliminary
CTA Alpha layout on the detection probability.
