ASTROSAT CZTI

Data Quality Report

Orbit 57376

Creation date: 2026-05-06T17:20:40.621032
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_57376cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57376cztM0_level2_quad_clean.evt
Size (bytes)481,752,00097,997,760
Size459.4 MB 93.5 MB
Events in quadrant A3,095,995657,383
Events in quadrant B3,274,836700,614
Events in quadrant C7,480,175552,681
Events in quadrant D3,455,895585,388

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141201
B0145751
C0268681
D0149791

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6766640.945906%
B67661071.581437%
C6766109416.169081%
D67661432.113509%

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 7751 6766 22 22 0.28% 0.33%
B 7751 6766 38 38 0.49% 0.56%
C 7751 6766 1050 1050 13.55% 15.52%
D 7751 6766 113 113 1.46% 1.67%

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 3 61 112979 615.31 744 723 182.4
A 10 251 36022 193.49 744 723 182.4
A 13 248 33457 179.43 744 723 182.4
B 5 185 160868 1025.8 728 699 156.1
B 7 252 57629 364.61 728 699 156.1
B 0 63 38729 243.56 728 699 156.1
C 15 224 3382460 18436.32 674 666 183.4
C 8 7 688180 3748.08 674 666 183.4
C 9 38 287555 1564.01 674 666 183.4
D 2 120 183675 912.38 720 691 200.6
D 12 6 116424 577.06 720 691 200.6
D 2 249 96595 478.19 720 691 200.6

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