ner_tags: O O O O O O O O O O O O O O O O O O O O O O O O O B-Organization B-Archive I-Archive I-Archive I-Archive I-Archive I-Archive I-Archive O B-Archive O O O O O B-Organization I-Organization I-Organization I-Organization O O B-Observatory I-Observatory I-Observatory O O O O O O O B-Software I-Software I-Software I-Software O B-Software O O O B-Software I-Software I-Software I-Software O B-Software O O O O O B-ComputingFacility I-ComputingFacility I-ComputingFacility I-ComputingFacility B-ComputingFacility B-Location O O B-Organization I-Organization I-Organization I-Organization B-Organization B-Location B-Person O O O O B-Organization O B-Organization O O O B-Person O O O O O B-Organization O O O B-Organization B-Location I-Location B-Grant O O O O
tokens: ACKNOWLEDGEMENTS We thank the anonymous referee for insightful comments and constructive suggestions. This research has made use of data, software, and/or web tools obtained from NASAs High Energy Astrophysics Science Archive Research Center ( heasarc ), a service of the Goddard Space Flight Center and the Smithsonian Astrophysical Observatory. This research has made use of the XRT Data Analysis Software ( xrtdas ) and the NuSTAR Data Analysis Software ( nustar-das ) jointly developed by the ASI Science Data Center (ASDC, Italy) and the California Institute of Technology (Caltech, USA). PG would like to thank IUCAA and BARC for their hospitality. RG would like to thank the IUCAA associateship programme and CSIR, New Delhi (03(1412)/17/EMR-II) for the financial support.