ASTROSAT CZTI

Data Quality Report

Orbit 55793

Creation date: 2026-01-20T05:56:17.907483
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_127T10_9000006542_55793cztM0_level2.fits modeM0/AS1A14_127T10_9000006542_55793cztM0_level2_quad_clean.evt
Size (bytes)537,226,560100,045,440
Size512.3 MB 95.4 MB
Events in quadrant A7,270,054571,747
Events in quadrant B3,375,585736,962
Events in quadrant C3,331,171662,365
Events in quadrant D5,399,942600,873

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261284
B0149092
C0150602
D0206542

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6565117517.897944%
B65652083.168317%
C65652003.046458%
D65654977.570449%

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 7725 6565 1004 1004 13.00% 15.29%
B 7725 6565 186 186 2.41% 2.83%
C 7725 6565 199 199 2.58% 3.03%
D 7725 6565 511 511 6.61% 7.78%

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 15 32 3768796 19271.26 725 709 195.5
A 8 192 296013 1510.28 725 709 195.5
A 12 115 266488 1359.28 725 709 195.5
B 7 0 94315 530.94 795 776 176.2
B 10 247 85162 478.99 795 776 176.2
B 0 199 35639 197.89 795 776 176.2
C 13 3 125066 539.5 781 775 230.4
C 15 200 89119 383.47 781 775 230.4
C 6 223 45019 192.05 781 775 230.4
D 11 129 1793563 7841.34 769 734 228.6
D 15 125 187541 817.04 769 734 228.6
D 3 12 143562 624.69 769 734 228.6

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