ASTROSAT CZTI

Data Quality Report

Orbit 54860

Creation date: 2025-11-18T12:04:15.648291
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_039T06_9000006526_54860cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54860cztM0_level2_quad_clean.evt
Size (bytes)424,287,360106,971,840
Size404.6 MB 102.0 MB
Events in quadrant A3,727,211683,123
Events in quadrant B3,547,280742,538
Events in quadrant C3,895,701661,502
Events in quadrant D3,949,489627,695

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01714514
B01640725
C01727118
D01749719

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75302613.466135%
B75271311.740401%
C75291151.527427%
D7530961.274900%

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 8971 7537 146 146 1.63% 1.94%
B 8970 7537 22 22 0.25% 0.29%
C 8971 7538 58 58 0.65% 0.77%
D 8971 7538 77 77 0.86% 1.02%

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 8 206 312214 1599.31 787 767 194.7
A 8 249 231165 1183.11 787 767 194.7
A 13 248 86069 438.03 787 767 194.7
B 5 185 105207 614.56 787 759 170.0
B 10 247 94490 551.51 787 759 170.0
B 5 236 74317 432.81 787 759 170.0
C 14 254 280603 1320.93 770 765 211.8
C 12 252 222391 1046.15 770 765 211.8
C 15 209 149206 700.69 770 765 211.8
D 10 181 277329 1261.79 769 737 219.2
D 11 129 266951 1214.45 769 737 219.2
D 8 240 84933 384.1 769 737 219.2

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