ASTROSAT CZTI

Data Quality Report

Orbit 35451

Creation date: 2022-04-20T23:52:17.291433
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A11_068T03_9000005076_35451cztM0_level2.evt modeM0/AS1A11_068T03_9000005076_35451cztM0_level2_quad_clean.evt
Size (bytes)473,400,00045,020,160
Size451.5 MB 42.9 MB
Events in quadrant A2,569,016267,023
Events in quadrant B5,539,335248,636
Events in quadrant C3,100,878253,848
Events in quadrant D2,791,841245,800

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103753
B0199612
C0119642
D0114422

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A494770.141500%
B494786517.485345%
C49471613.254498%
D4947811.637356%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7098 4948 0 0 0.00% 0.00%
B 7098 4948 557 557 7.85% 11.26%
C 7098 4948 118 118 1.66% 2.38%
D 7098 4948 60 60 0.85% 1.21%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 123419 983.1 624 614 124.9
A 13 6 16276 125.38 624 614 124.9
A 9 143 8831 65.78 624 614 124.9
B 5 236 1689161 15101.25 590 576 111.8
B 4 251 961942 8597.63 590 576 111.8
B 5 200 296322 2644.9 590 576 111.8
C 0 10 472192 3420.6 593 599 137.9
C 15 214 204895 1481.82 593 599 137.9
C 15 159 30112 214.07 593 599 137.9
D 13 249 180183 1239.12 591 575 144.9
D 12 233 89756 615.26 591 575 144.9
D 2 153 62910 430.05 591 575 144.9

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter