Research Projects in DhakaResearch Projects in DhakaThis project involved collecting, reviewing and standardising publicly available cosmic void catalogue data from DESI DR1, SDSS DR7 and SDSS DR12 sources. The raw files were examined to identify the relevant fields, catalogue structures, algorithms and available boundary information.
I developed a common data structure covering void position, redshift, comoving coordinates, effective radius, ellipticity, density contrast, significance, member-galaxy count and edge status. The data were cleaned and merged into a single table containing 200 selected cosmic voids across REVOLVER, VIDE, ZOBOV and VoidFinder catalogues.
A size-based selection method was applied to include large, medium, small and randomly selected interior voids from each catalogue group. Where edge information was available, boundary voids were excluded to maintain the quality of the selected sample.
The final package also included 19,172 member-galaxy records for 75 selected voids and boundary-surface data for 24 voids. Supporting visualisations were prepared to present the sky distribution, comoving-space distribution and member-galaxy structure of the selected voids. I provide Research, Data & Analytics services to help businesses make informed, data-driven decisions. My work includes in-depth web and online research, market research, and competitive analysis to uncover trends, opportunities, and insights. I support data analytics and data scraping to collect, clean, and structure accurate datasets, while delivering targeted B2B and B2C lead generation aligned with ideal customer profiles. I also manage CRM data entry and database management, ensuring records are accurate, up to date, and well organized to support sales, marketing, and growth strategies. 
