  We study the signal of anisotropy in AGNs/quasars of CatWISE2020 catalogue
using different observables. It has been reported earlier that this data shows
a strong signal of dipole anisotropy in the source number counts. We test this
claim using two independent data analysis procedures and find our number count
dipole consistent with the earlier results. In addition to number counts, we
test for the anisotropy signal in two other observables -- mean spectral index
$\bar{\alpha}$ and mean flux density $\bar{B}$. We find a dipole signal of
considerable strength both in the mean spectral index and the mean flux
density. The dipole in mean flux density points towards the galactic center and
becomes very weak after imposing a flux cut to remove sources with flux greater
than 1 mJy. This can be attributed to the presence of some bright sources. The
signal in mean spectral index, however, is relatively stable as a function of
both flux and galactic cuts. The dipole in this observable points roughly
opposite to the galactic center and hence most likely arises due to galactic
bias. Hence, the signal in both the mean spectral index and mean flux density
appears to be consistent with isotropy.
