# Logged topics are being recorded at different timestamps

**URL:** <https://discuss.px4.io/t/logged-topics-are-being-recorded-at-different-timestamps/25440>\
**Category:** Flight Testing & Log Analysis\
**Created:** [December 14, 2021, 5:12am UTC](https://discuss.px4.io/t/logged-topics-are-being-recorded-at-different-timestamps/25440 "2021-12-14T05:12:23Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Neeraj\_P](https://discuss.px4.io/user_avatar/discuss.px4.io/neeraj_p/32/9861_2.png) [@Neeraj\_P](https://discuss.px4.io/u/Neeraj_P)\
**Post date:** [December 14, 2021, 5:12am UTC](https://discuss.px4.io/t/logged-topics-are-being-recorded-at-different-timestamps/25440/1 "2021-12-14T05:12:23Z")

</div>

I want to log the gyro data and the servo outputs at around 200-250 Hz. I followed this ([Customize PX4 Data logging on SD Card using new Logger Module and analyze with PyuLog - YouTube](https://www.youtube.com/watch?v=p0WAPgaa7Rs)) video and I did get the gyro and servo output data. But when I converted them to csv file and took a closer look, they were logged at different timestamps and the time difference between values varies from 1 millisecond to 12 milliseconds. Is there any way to log them with the same timestamp?

The gyro data sample  
|timestamp|timestamp\_sample|x|y|z|  
|8080317|8080012|0.015552861|-0.011291803|-0.0028229507|  
|8081579|8081261|0.013901701|-0.010492855|-0.0065513765|  
|8084066|8083754|0.015233281|-0.012144014|-0.0073503247|  
|8091547|8091236|0.015180019|-0.010705908|-0.004101268|  
|8095278|8094977|0.015126755|-0.014700649|-0.00495348|  
|8097779|8097469|0.0116113825|-0.014061491|-0.004740427|  
|8101530|8101211|0.018269286|-0.0145408595|-0.005113269|  
|8105257|8104952|0.016245283|-0.013848438|-0.005592638|  
|8109018|8108699|0.011451593|-0.014061491|-0.005752428|  
|8115245|8114931|0.013528858|-0.0139549645|-0.005539375|  
|8118986|8118671|0.015339808|-0.014807176|-0.00314253|  
|8122732|8122415|0.016138757|-0.014913702|-0.0053263223|  
|8126467|8126154|0.018482339|-0.014913702|-0.0020240024|  
|8128958|8128654|0.014487596|-0.0127831735|-0.0040480047|

The servo outputs data sample

|8089031|8|912|912|912|912|  
|8090294|8|913|913|913|913|  
|8092775|8|913|913|913|913|  
|8100254|8|916|916|916|916|  
|8104009|8|917|917|917|917|  
|8106544|8|918|918|918|918|  
|8110226|8|920|920|920|920|  
|8114029|8|921|921|921|921|  
|8117714|8|922|922|922|922|  
|8123950|8|924|924|924|924|  
|8127685|8|926|926|926|926|  
|8131421|8|927|927|927|927|  
|8135189|8|928|928|928|928|  
|8137663|8|929|929|929|929|