The HEASARC welcomes your participation in a brief survey to capture how users access and utilize HEASARC data, software, and services. The outcome(s) of this survey will be used to guide, prioritize, and plan our activities and development in the coming years. It contains 20 questions, generally takes just a few minutes to complete, and your answers will remain totally anonymous. The survey is open until Dec 18, 2023. We thank you in advance for your valuable feedback.

Search:

[Advanced Search]



next up previous contents
Next: filter region Up: filter Previous: filter mkf   Contents

filter phase

This allows you to enter one epoch-period combination, and up to ten phases. The subsequent extract command will use the union of all these phases to filter the data. If there is a phase file already present, you are given the chance to save it before proceeding. 

xsel > filter phase epoch period phase save_file

The epoch is in MJD (in the same time system as the data), the period in days, and the phase(s) run from 0-1.

So to filter using the epoch 40000, period of .5 days, and the first and third quarters of the period, say 

xsel > filter 40000 .5 "0.0-.25,0.5-0.75"

The double quotes are necessary to protect the comma.


HEASARC Home | Observatories | Archive | Calibration | Software | Tools | Students/Teachers/Public
Last modified: Tuesday, 10-Jan-2023 11:03:01 EST

The HEASARC welcomes your participation in a brief survey to capture how users access and utilize HEASARC data, software, and services. The outcome(s) of this survey will be used to guide, prioritize, and plan our activities and development in the coming years. It contains 20 questions, generally takes just a few minutes to complete, and your answers will remain totally anonymous. The survey is open until Dec 18, 2023. We thank you in advance for your valuable feedback.