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In this paper, we present resolved observations of the Sunyaev-Zel'dovich(SZ) effect, obtained with the NIKA2 camera, towards the cluster of galaxiesXLSSC102, a relatively low-mass system ($M_{500} \sim 2 \times 10^{14}$M$_{\odot}$) at $z = 0.97$ detected from the XXL survey. We combine NIKA2 SZdata, XMM-Newton X-ray data, and Megacam optical data to explore, respectively,the spatial distribution of the gas electron pressure, the gas density, and thegalaxies themselves. We find significant offsets between the X-ray peak, the SZpeak, the brightest cluster galaxy, and the peak of galaxy density.Additionally, the galaxy distribution and the gas present elongatedmorphologies. This is interpreted as the sign of a recent major merging event,which induced a local boost of the gas pressure towards the north of XLSSC102and stripped the gas out of the galaxy group. The NIKA2 data are also combinedwith XXL data to construct the thermodynamic profiles of XLSSC102, obtainingrelatively tight constraints up to about $\sim r_{500}$, and revealingproperties that are typical of disturbed systems. We also explore the impact ofthe cluster centre definition and the implication of local pressuresubstructure on the recovered profiles. Finally, we derive the globalproperties of XLSSC102 and compare them to those of high-mass-and-low-redshiftsystems, finding no strong evidence for non-standard evolution. We also usescaling relations to obtain alternative mass estimates from our profiles. Thevariation between these different mass estimates reflects the difficulty toaccurately measure the mass of low-mass clusters at z$\sim$1, especially withlow signal-to-noise ratio (S/N) data and for a disturbed system. However, italso highlights the strength of resolved SZ observations alone and incombination with survey-like X-ray data.

The XXL Survey XLIV. Sunyaev-Zel'dovich mapping of a low-mass cluster at z~1: a multi-wavelength approach