Ibis/Picsit Status

TL;DR

This paper reports on the status and calibration of the PICsIT detector on the IBIS instrument, including data analysis from Crab and GRB observations in different modes, and the development of response matrices.

Contribution

It provides an update on PICsIT's performance, data fitting procedures, and initial response matrix generation for Spectral Timing mode.

Findings

Successful fitting of Crab data with power law models

Joint spectral analysis of GRB041219 across multiple instruments

Preliminary instrumental response matrices for Spectral Timing mode

Abstract

We report about the status of the PICsIT layer of the imager IBIS. The instrument has been tested in both Spectral Imaging and Spectral Timing Mode. PICsIT Single Events, Multiple and ISGRI data of the Crab are simultaneously fitted to a power law model and fit parameters are compared with the standard values. We present a joint fit of SPI, ISGRI, PICsIT data of the long GRB041219, that was seen by the PICsIT instrument in both Spectral Imaging and Spectral Timing acquisition modes. This allowed us to generate a preliminary version of the instrumental response matrices for the PICsIT Spectral Timing mode.