I've checked and the only difference in the delta files are the units:
fitsdiff: 5.2.1
a: results/delta_extraction_lin_image/Delta/delta-1.fits.gz
b: data/delta_extraction_lin_image/Delta/delta-1.fits.gz
Maximum number of different data values to be reported: 10
Relative tolerance: 0.01, Absolute tolerance: 0.0
Extension HDU 1 (LAMBDA, 1):
Headers contain differences:
Keyword CHECKSUM has different values:
a> bEepc9enbCenb9en
b> dFiqd9fndCfnd9fn
Keyword CHECKSUM has different comments:
a> HDU checksum updated 2023-04-26T12:17:56
? ^ ^^ ^ ^^^^
b> HDU checksum updated 2023-03-15T13:35:14
? ^ ^^ ^^^^ ^
Keyword DATASUM has different comments:
a> data unit checksum updated 2023-04-26T12:17:56
? ^ ^^ ^ ^^^^
b> data unit checksum updated 2023-03-15T13:35:14
? ^ ^^ ^^^^ ^
Extension HDU 2 (METADATA, 1):
Headers contain differences:
Keyword CHECKSUM has different values:
a> 8GSg8DRe8DRe8DRe
b> 9CThJCRe9CReGCRe
Keyword CHECKSUM has different comments:
a> HDU checksum updated 2023-04-26T12:17:56
? ^ ^^ ^ ^^^^
b> HDU checksum updated 2023-03-15T13:35:14
? ^ ^^ ^^^^ ^
Keyword DATASUM has different comments:
a> data unit checksum updated 2023-04-26T12:17:56
? ^ ^^ ^ ^^^^
b> data unit checksum updated 2023-03-15T13:35:14
? ^ ^^ ^^^^ ^
Keyword TUNIT2 has different values:
a> rad
b> deg
Keyword TUNIT3 has different values:
a> rad
b> deg
Data contains differences:
Column DEC has different units:
a> rad
b> deg
Column RA has different units:
a> rad
b> deg
Extension HDU 3 (DELTA, 1):
Headers contain differences:
Keyword CHECKSUM has different values:
a> ZadVcZZSZabSbWZS
b> 9cQaGZQR9bQXEZQX
Keyword CHECKSUM has different comments:
a> HDU checksum updated 2023-04-26T12:17:56
? ^ ^^ ^ ^^^^
b> HDU checksum updated 2023-03-15T13:35:14
? ^ ^^ ^^^^ ^
Keyword DATASUM has different values:
a> 2052636157
b> 2023335554
Keyword DATASUM has different comments:
a> data unit checksum updated 2023-04-26T12:17:56
? ^ ^^ ^ ^^^^
b> data unit checksum updated 2023-03-15T13:35:14
? ^ ^^ ^^^^ ^
Extension HDU 4 (WEIGHT, 1):
Headers contain differences:
Keyword CHECKSUM has different values:
a> Xee2Yce0Xce0Xce0
b> Ra4NSU4KRa4KRU4K
Keyword CHECKSUM has different comments:
a> HDU checksum updated 2023-04-26T12:17:56
? ^ ^^ ^ ^^^^
b> HDU checksum updated 2023-03-15T13:35:14
? ^ ^^ ^^^^ ^
Keyword DATASUM has different values:
a> 3237017340
b> 3636236056
Keyword DATASUM has different comments:
a> data unit checksum updated 2023-04-26T12:17:56
? ^ ^^ ^ ^^^^
b> data unit checksum updated 2023-03-15T13:35:14
? ^ ^^ ^^^^ ^
Extension HDU 5 (CONT, 1):
Headers contain differences:
Keyword CHECKSUM has different values:
a> hMWWiJTWhJTWhJTW
b> LHVIOGVFLGVFLGVF
Keyword CHECKSUM has different comments:
a> HDU checksum updated 2023-04-26T12:17:56
? ^ ^^ ^ ^^^^
b> HDU checksum updated 2023-03-15T13:35:14
? ^ ^^ ^^^^ ^
Keyword DATASUM has different values:
a> 3629877370
b> 3764243699
Keyword DATASUM has different comments:
a> data unit checksum updated 2023-04-26T12:17:56
? ^ ^^ ^ ^^^^
b> data unit checksum updated 2023-03-15T13:35:14
? ^ ^^ ^^^^ ^
I've checked and the only difference in the delta files are the units:
I think this is safe to be replaced and merged.