territory of the DPR territory of the LPR
The OSCE report doesn't say DPR or LPR (it says Donetsk and Lugansk regions) and it doesn't say which side violated the cease fire.
Topic moved to another section? Then I will answer.
The links in the OSCE reports also contain a link to the full version of the PDF with a map showing the places where the ceasefire was violated. From these maps, you can easily understand which side violated the ceasefire.
Nor should it matter to Russia, because all of this happened not in Russian territory.
Perhaps this was not important until February 22, when Putin signed the Laws on the ratification of treaties on friendship, cooperation and partnership between the Russian Federation and the republics of the DPR and LPR. However:
February 22, 2022
332 explosions in the territory of the DPR, 703 violations of the ceasefire, 1224 explosions in the territory of the LPR, 1224 population of the ceasefire //
Report No. 41/2022, OSCEFebruary 23, 2022
345 explosions in the territory of the DPR, 528 ceasefire violations, 1075 explosions in the territory of the LPR, 1182 ceasefire violations //
Report No. 42/2022, OSCESimply put, Ukraine shelled Donetsk from Grad February 22, 2022. Even if the direct double casus belli that I mentioned above is not enough for you, this is an indirect casus belli, when Ukraine attacked independent states that have an agreement on friendship and military protection with Russia. Russia regards such an attack as an attack on itself. Russia immediately responded to such a manifestation of military aggression from Ukraine by launching a military special operation.
Since February 21, the war in Donbas has ceased to be an internal affair of Ukraine, and since February 22, it has become a matter for Russia as well.