[Shu-Wei Yeh, Chia-Jui Chou]
We applied ICA to clean KAGRA strain data from 1435106958 to 1435111758 (00:49–02:09 UTC, June 28, 2025) [Ref. klog 34400], using a cleaning duration of 1200 seconds. The segment was divided into four intervals for testing noise subtraction: 1435106958, 1435108158, 1435109358, and 1435110558. Here, we present the results for the interval starting at 1435108158.
The central frequencies (f_c), step-by-step improvements, and the overall inspiral range improvement are listed below. We observed effective noise subtraction in the June 28 data.
For the remaining denoising results and the list of witness channels used, please refer to the attached slides here, JGW-G2516738-v2.
The next step is testing DeepClean's performance on the June 28 data.
| f_c [Hz] | Incremental (per-band) improvement [%] | Cumulative improvement [%] |
| 60 | 0.139 | 0.139 |
| 120 | 0.444 | 0.583 |
| 162 | 0.263 | 0.847 |
| 240 | 0.118 | 0.966 |
| 300 | 0.027 | 0.994 |
| 326 | 0.247 | 1.243 |
| 360 | 0.002 | 1.245 |
| 420 | 0.004 | 1.250 |
| 480 | 0.009 | 1.259 |
| 515 | 0.073 | 1.333 |
| 540 | 0.010 | 1.343 |
| 600 | 0.001 | 1.344 |
| 660 | 0.001 | 1.346 |
| 780 | 0.002 | 1.348 |
| 840 | 0.001 | 1.348 |
