ASTROSAT CZTI

Data Quality Report

Orbit 57366

Creation date: 2026-05-06T02:06:08.252091
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/AS1A14_102T01_9000006572_57366cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57366cztM0_level2_quad_clean.evt
Size (bytes)505,638,72080,913,600
Size482.2 MB 77.2 MB
Events in quadrant A2,918,221564,763
Events in quadrant B2,971,721604,462
Events in quadrant C8,825,410369,233
Events in quadrant D3,513,468473,258

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01329116
B01343912
C030672104
D01509331

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6277270.430142%
B6278600.955718%
C6269228536.449194%
D62711862.966034%

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 7602 6563 5 5 0.07% 0.08%
B 7602 6563 15 15 0.20% 0.23%
C 7601 6546 1979 1979 26.04% 30.23%
D 7602 6562 194 194 2.55% 2.96%

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 8 4 139007 827.39 677 659 167.2
A 0 12 61793 365.61 677 659 167.2
A 3 14 24502 142.59 677 659 167.2
B 5 185 111583 770.67 670 646 143.9
B 0 213 90910 627.06 670 646 143.9
B 7 252 24341 164.61 670 646 143.9
C 15 224 6175928 43475.76 522 517 142.0
C 14 254 136040 954.1 522 517 142.0
C 12 2 121658 852.85 522 517 142.0
D 3 224 526506 2912.84 639 608 180.5
D 8 240 123785 682.25 639 608 180.5
D 12 191 103619 570.56 639 608 180.5

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