# Description¶

## Overview¶

The white_light step sums the spectroscopic flux over all wavelengths in each integration of a multi-integration extracted spectrum product to produce an integrated (“white”) flux as a function of time for the target. This is to be applied to the _x1dints product in a spectroscopic Time-Series Observation (TSO), as part of the calwebb_tso3 pipeline.

## Input details¶

The input should be in the form of an _x1dints product, which contains extracted spectra from multiple integrations for a given target.

## Algorithm¶

The algorithm performs a simple sum of the flux values over all wavelengths for each extracted spectrum contained in the input product.

## Output product¶

The output product is a table of time vs. integrated flux values, stored in the form of a ASCII ECSV (Extended Comma-Separated Value) file. The product type suffix is _whtlt.