ASTROSAT CZTI

Data Quality Report

Orbit 54664

Creation date: 2025-11-05T06:37:19.731793
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_066T07_9000006522_54664cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54664cztM0_level2_quad_clean.evt
Size (bytes)605,142,72094,095,360
Size577.1 MB 89.7 MB
Events in quadrant A3,194,777667,418
Events in quadrant B4,167,031689,091
Events in quadrant C4,910,174601,763
Events in quadrant D9,592,059409,486

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147452
B0174802
C0196912
D0334195

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6907781.129289%
B69073995.776748%
C69074025.820182%
D6906241835.013032%

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 7632 6910 30 30 0.39% 0.43%
B 7632 6910 218 218 2.86% 3.15%
C 7632 6909 351 351 4.60% 5.08%
D 7630 6907 2086 2086 27.34% 30.20%

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 11 3 171965 920.65 753 734 186.0
A 5 240 44733 236.57 753 734 186.0
A 13 254 14871 76.01 753 734 186.0
B 2 249 773368 4940.26 733 708 156.4
B 1 207 279341 1781.53 733 708 156.4
B 10 247 48785 307.4 733 708 156.4
C 3 242 1743859 8885.38 712 707 196.2
C 6 223 73367 370.37 712 707 196.2
C 14 254 58039 292.24 712 707 196.2
D 11 129 5729978 33605.86 597 570 170.5
D 11 176 1255821 7362.68 597 570 170.5
D 14 52 115516 674.22 597 570 170.5

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