##############################
# File 1, problems untarring #
##############################
Downloaded in Dec 2022:    old/CSKS1_RAW_B_HI_04_HH_RD_FF_20210519040513_20210519040520.tar.gz
Downloaded in Oct 2023     new/CSKS1_RAW_B_HI_04_HH_RD_FF_20210519040513_20210519040520.tar.gz

Note same age:
 ll old/CSKS1_RAW_B_HI_04_HH_RD_FF_20210519040513_20210519040520.tar.gz new/CSKS1_RAW_B_HI_04_HH_RD_FF_20210519040513_20210519040520.tar.gz
-rw-rw---- 1 exouser exouser 557885341 May 20  2021 new/CSKS1_RAW_B_HI_04_HH_RD_FF_20210519040513_20210519040520.tar.gz
-rw-rw---- 1 exouser exouser 557885341 May 20  2021 old/CSKS1_RAW_B_HI_04_HH_RD_FF_20210519040513_20210519040520.tar.gz

But different file sums:
sum old/CSKS1_RAW_B_HI_04_HH_RD_FF_20210519040513_20210519040520.tar.gz new/CSKS1_RAW_B_HI_04_HH_RD_FF_20210519040513_20210519040520.tar.gz
39400 544810 old/CSKS1_RAW_B_HI_04_HH_RD_FF_20210519040513_20210519040520.tar.gz
47544 544810 new/CSKS1_RAW_B_HI_04_HH_RD_FF_20210519040513_20210519040520.tar.gz

untar command:

tar xvfz new/CSKS1_RAW_B_HI_04_HH_RD_FF_20210519040513_20210519040520.tar.gz
SHA256_777778_1-1.sha256.sec
DFDN_CSKS1_RAW_B_HI_04_HH_RD_FF_20210519040513_20210519040520.h5.xml
CSKS1_RAW_B_HI_04_HH_RD_FF_20210519040513_20210519040520.h5

gzip: stdin: invalid compressed data--format violated
tar: Unexpected EOF in archive
tar: Unexpected EOF in archive
tar: Error is not recoverable: exiting now
//perfectly-elegant-tapir/data/HDF5EOS/qtest_unavco[2015] tar xvfz old/CSKS1_RAW_B_HI_04_HH_RD_FF_20210519040513_20210519040520.tar.gz
SHA256_777778_1-1.sha256.sec
DFDN_CSKS1_RAW_B_HI_04_HH_RD_FF_20210519040513_20210519040520.h5.xml
CSKS1_RAW_B_HI_04_HH_RD_FF_20210519040513_20210519040520.h5
DFAS_777778_CSK_AccompanyingSheet.xml
DFAS_777778_CSK_AccompanyingSheet.pdf
DFDN_CSKS1_RAW_B_HI_04_HH_RD_FF_20210519040513_20210519040520.h5.pdf

##############################
# File 2, no issue           #
##############################

Same test sum. untars well:

sum old/CSKS1_RAW_B_HI_04_HH_RD_FF_20210823040518_20210823040525.tar.gz new/CSKS1_RAW_B_HI_04_HH_RD_FF_20210823040518_20210823040525.tar.gz
64123 543551 old/CSKS1_RAW_B_HI_04_HH_RD_FF_20210823040518_20210823040525.tar.gz
64123 543551 new/CSKS1_RAW_B_HI_04_HH_RD_FF_20210823040518_20210823040525.tar.gz