The genome size of p_ctg.fa is smaller than survey

[Pengzw0909]

Hi,
I did a NGS survey and a TGS survey, the estimated size is about 2.2Gb.The genome size of p_ctg.fa is 1.69Gb
, smaller than survey. Can you give me some suggestion？ It‘s an insect of diptera.

NGS survey:

TGS survey:

cmd:
fa=ccs.fasta
~/01.software/hifiasm/hifiasm-0.19.8/hifiasm -o hifiasm.asm -t60 -l 2 -n 4 $fa 2> $prefix.assemble.log

p_ctg.fa:
Contigs stat:
CtgNum CtgLen CtgN50 CtgN90 CtgMax GC(%)
1029 1693753142 18588588 2976463 107319031 39.83

the log is
assemble.log

So I have changed the parameter “--hom-cov=57”，the genome size is 2.8Gb, but I found that there was a lot of redundancy. After purge，the genome size is smaller than 2.2Gb.

[chhylp123]

2.2 Gb assembly with purged might be right?