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The sources that are detected within the central 24 arcminute region (dashed circle) by makecurves.

The sources that are detected within the central 24 arcminute region (dashed circle) by makecurves.

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Figure 1: Flowchart for the function makecurves in Curvit.
Figure 2: Flowchart for the function curve in Curvit.
Figure 3: Fraction of frames with no events as a function of total...
Figure 4: The sources that are detected within the central 24 arcminute...
+4 Figure 5: Light curves generated by the makecurves function in Curvit.
Curvit: An open-source Python package to generate light curves from UVIT data
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  • Jan 2021
Curvit is an open-source Python package that facilitates the creation of light curves from the data collected by the Ultra-Violet Imaging Telescope (UVIT) onboard AstroSat, India's first multi-wavelength astronomical satellite. The input to Curvit is the calibrated events list generated by the UVIT-Payload Operation Center (UVIT-POC) and made avail...
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... As an example, the Curvit software was run on L2 events lists that correspond to observations with the FUV filter F148W to create light curves. Using makecurves function with the detection threshold value of 4, six sources were automatically detected and Curvit generated light curves for all of them (Fig. 5). they are labelled as (a) to (f) in Fig. 4. An aperture radius of 6 sub-pixels (2.5 arcseconds) and time bin of 50 seconds was used. The observed variance (Σ 2 ) of each of the light curves in Fig. 5 is due to contributions from intrinsic source variability and measurement uncertainty. In the event of the source being non-variable, the contribution of source variability to the ...