ASTROSAT CZTI

Data Quality Report

Orbit 52557

Creation date: 2025-06-16T11:06:51.228758
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/AS1C09_011T06_9000006478_52557cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52557cztM0_level2_quad_clean.evt
Size (bytes)767,615,04086,022,720
Size732.1 MB 82.0 MB
Events in quadrant A3,249,290639,041
Events in quadrant B9,063,190530,662
Events in quadrant C4,805,075589,602
Events in quadrant D10,769,077369,658

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149923
B0316613
C0192313
D0367563

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6818761.114696%
B6817181226.580607%
C68173885.691653%
D6817275040.340326%

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 7883 6820 42 42 0.53% 0.62%
B 7882 6819 1543 1543 19.58% 22.63%
C 7882 6819 354 354 4.49% 5.19%
D 7881 6817 2450 2450 31.09% 35.94%

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 4 95 142873 818.45 695 678 173.7
A 3 14 101434 579.93 695 678 173.7
A 13 248 85470 488.05 695 678 173.7
B 10 44 4041247 31832.06 600 579 126.9
B 10 254 1363393 10736.14 600 579 126.9
B 4 170 758129 5967.92 600 579 126.9
C 15 248 1420787 7751.56 661 653 183.2
C 15 224 229426 1248.72 661 653 183.2
C 13 3 108034 586.12 661 653 183.2
D 6 42 5145320 31998.47 547 521 160.8
D 8 176 1247414 7755.15 547 521 160.8
D 2 62 640973 3983.34 547 521 160.8

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