ASTROSAT CZTI

Data Quality Report

Orbit 58553

Creation date: 2026-07-24T21:33:22.072966
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_044T04_9000006592_58553cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58553cztM0_level2_quad_clean.evt
Size (bytes)542,551,68092,822,400
Size517.4 MB 88.5 MB
Events in quadrant A3,210,074658,092
Events in quadrant B6,320,286527,198
Events in quadrant C3,534,434622,773
Events in quadrant D6,495,431533,145

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143002
B0235282
C0154262
D0238952

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6728931.382283%
B6727181326.951093%
C67271331.977107%
D672789113.245132%

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 7668 6729 18 18 0.23% 0.27%
B 7667 6725 660 660 8.61% 9.81%
C 7667 6728 71 71 0.93% 1.06%
D 7667 6727 760 760 9.91% 11.30%

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 3 245 127728 675.32 760 740 188.0
A 10 17 25119 129.64 760 740 188.0
A 3 14 18428 94.06 760 740 188.0
B 6 255 3148750 24613.5 595 574 127.9
B 8 234 217699 1697.56 595 574 127.9
B 4 171 200462 1562.79 595 574 127.9
C 12 252 139962 688.91 734 728 202.1
C 9 237 139612 687.18 734 728 202.1
C 4 5 129832 638.79 734 728 202.1
D 2 249 2306715 11586.1 702 671 199.0
D 8 240 299563 1501.7 702 671 199.0
D 3 12 287635 1441.77 702 671 199.0

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