Open chromatin assays are known to have significant GC bias. Please take this
into consideration as necessary.
Library complexity quality metrics
Library complexity (filtered non-mito BAM)
rep1
rep2
ctl1
Total Fragments
13932773
17127004
25203330
Distinct Fragments
13270652
16463264
24836709
Positions with Two Read
510205
374961
323631
NRF = Distinct/Total
0.952477
0.961246
0.985453
PBC1 = OneRead/Distinct
0.957449
0.971827
0.986628
PBC2 = OneRead/TwoRead
24.90367
42.669627
75.717657
Mitochondrial reads are filtered out by default.
The non-redundant fraction (NRF) is the fraction of non-redundant mapped reads
in a dataset; it is the ratio between the number of positions in the genome
that uniquely mapped reads map to and the total number of uniquely mappable
reads. The NRF should be > 0.8. The PBC1 is the ratio of genomic locations
with EXACTLY one read pair over the genomic locations with AT LEAST one read
pair. PBC1 is the primary measure, and the PBC1 should be close to 1.
Provisionally 0-0.5 is severe bottlenecking, 0.5-0.8 is moderate bottlenecking,
0.8-0.9 is mild bottlenecking, and 0.9-1.0 is no bottlenecking. The PBC2 is
the ratio of genomic locations with EXACTLY one read pair over the genomic
locations with EXACTLY two read pairs. The PBC2 should be significantly
greater than 1. See more details at
the ENCODE portal standard for ChIP-Seq pipeline
NRF (non redundant fraction)
PBC1 (PCR Bottleneck coefficient 1)
PBC2 (PCR Bottleneck coefficient 2)
PBC1 is the primary measure. Provisionally
N1: Replicate 1 self-consistent peaks (comparing two pseudoreplicates generated by subsampling Rep1 reads)
N2: Replicate 2 self-consistent peaks (comparing two pseudoreplicates generated by subsampling Rep2 reads)
Ni: Replicate i self-consistent peaks (comparing two pseudoreplicates generated by subsampling RepX reads)
Nt: True Replicate consistent peaks (comparing true replicates Rep1 vs Rep2)
Np: Pooled-pseudoreplicate consistent peaks (comparing two pseudoreplicates generated by subsampling pooled reads from Rep1 and Rep2)
Self-consistency Ratio: max(N1,N2) / min (N1,N2)
Rescue Ratio: max(Np,Nt) / min (Np,Nt)
Reproducibility Test: If Self-consistency Ratio >2 AND Rescue Ratio > 2, then 'Fail' else 'Pass'
Number of raw peaks
rep1
rep2
Number of peaks
134503
115953
Top 500000 raw peaks from macs2 with p-val threshold 0.01
Peak calling statistics
Peak region size
rep1
rep2
idr_opt
overlap_opt
Min size
85.0
110.0
98.0
98.0
25 percentile
85.0
110.0
249.0
138.0
50 percentile (median)
85.0
117.0
377.0
192.0
75 percentile
113.0
160.0
566.0
304.0
Max size
1405.0
2090.0
1758.0
1758.0
Mean
111.62948038333718
157.8351228515002
430.14906427990235
258.1822318955283
rep1rep2idr_optoverlap_opt
Enrichment / Signal-to-noise ratio
Strand cross-correlation measures (trimmed/filtered SE BAM)
rep1
rep2
Number of Subsampled Reads
13932773
15000000
Estimated Fragment Length
85
110
Cross-correlation at Estimated Fragment Length
0.204988475042893
0.233145289304297
Phantom Peak
40
40
Cross-correlation at Phantom Peak
0.1896441
0.2055263
Argmin of Cross-correlation
1500
1500
Minimum of Cross-correlation
0.1432858
0.1522222
NSC (Normalized Strand Cross-correlation coeff.)
1.430627
1.531611
RSC (Relative Strand Cross-correlation coeff.)
1.330995
1.51814
Performed on subsampled (15000000) reads mapped from FASTQs that are trimmed to 50.
Such FASTQ trimming and subsampling reads are for cross-corrleation analysis only.
Untrimmed FASTQs are used for all the other analyses.
NOTE1: For SE datasets, reads from replicates are randomly subsampled to 15000000.
NOTE2: For PE datasets, the first end (R1) of each read-pair is selected and trimmed to 50 the reads are then randomly subsampled to 15000000.
Normalized strand cross-correlation coefficient (NSC) = col9 in outFile
Relative strand cross-correlation coefficient (RSC) = col10 in outFile
Estimated fragment length = col3 in outFile, take the top value
rep1rep2
Jensen-Shannon distance (filtered/deduped BAM)
rep1
rep2
AUC
0.21910112945338045
0.22334979338185257
Synthetic AUC
0.48438216811025836
0.4859387503057898
X-intercept
0.2571586233370521
0.21656410071856144
Synthetic X-intercept
2.7379991510609414e-34
1.7684167876836922e-42
Elbow Point
0.6449038919078866
0.5979214900652983
Synthetic Elbow Point
0.4987227481544851
0.49625245989306327
JS Distance
0.13898523485967962
0.1689582417535739
Synthetic JS Distance
0.28676207501578016
0.31226543277363783
% Genome Enriched
33.71660608677919
28.379777913732642
Diff. Enrichment
25.62443016480026
23.544363425934627
CHANCE Divergence
0.2252846897131287
0.20200695957853732
Peak enrichment
Fraction of reads in peaks (FRiP)
FRiP for macs2 raw peaks
rep1
rep2
rep1-pr1
rep2-pr1
rep1-pr2
rep2-pr2
pooled
pooled-pr1
pooled-pr2
Fraction of Reads in Peaks
0.09380885368674326
0.10860644350623123
0.13318291055887627
0.13620592621397498
0.1331943749811912
0.13633162622850212
0.07605838155270013
0.09957609025398279
0.09971970896615796
FRiP for overlap peaks
rep1_vs_rep2
rep1-pr1_vs_rep1-pr2
rep2-pr1_vs_rep2-pr2
pooled-pr1_vs_pooled-pr2
Fraction of Reads in Peaks
0.0631563447437704
0.05119437784729676
0.07572971537858712
0.0646131268531071
FRiP for IDR peaks
rep1_vs_rep2
rep1-pr1_vs_rep1-pr2
rep2-pr1_vs_rep2-pr2
pooled-pr1_vs_pooled-pr2
Fraction of Reads in Peaks
0.05319126240462448
0.04184048402791014
0.06375792483838112
0.05461228441851354
For macs2 raw peaks:
repX: Peak from true replicate X
repX-prY: Peak from Yth pseudoreplicates from replicate X
pooled: Peak from pooled true replicates (pool of rep1, rep2, ...)
pooled-pr1: Peak from 1st pooled pseudo replicate (pool of rep1-pr1, rep2-pr1, ...)
pooled-pr2: Peak from 2nd pooled pseudo replicate (pool of rep1-pr2, rep2-pr2, ...)
For overlap/IDR peaks:
repX_vs_repY: Comparing two peaks from true replicates X and Y
repX-pr1_vs_repX-pr2: Comparing two peaks from both pseudoreplicates from replicate X
pooled-pr1_vs_pooled-pr2: Comparing two peaks from 1st and 2nd pooled pseudo replicates