what is bam format file flag 0x2 mean?

Question

[zt10122]

I find the sam PDF,and want to understand flag 0x2,but I can not understand. where have some detailed instructions for it ?

Answer 1

[Pierre Lindenbaum]

in a paired end, both fragments are mapped on the same contig, anti-parallel to the other, at a good distance.

see slide 33 of https://www.slideshare.net/lindenb/next-generation-sequencing-file-formats-2017

[zt10122]

Thanks a million.

[Wang Cong]

For Hi-C reads which two parts of the read could be separated far apart, will it be labelled as "properly paired"?