ASTROSAT CZTI

Data Quality Report

Orbit 54391

Creation date: 2025-10-17T22:07:23.262459
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_126T19_9000006518_54391cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54391cztM0_level2_quad_clean.evt
Size (bytes)872,945,28097,551,360
Size832.5 MB 93.0 MB
Events in quadrant A3,493,598743,978
Events in quadrant B4,253,564781,139
Events in quadrant C7,199,094595,371
Events in quadrant D16,748,586278,110

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163420
B0183800
C0271100
D0552120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7980190.238095%
B79811952.443303%
C7981129416.213507%
D7981489961.383285%

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 7980 7980 6 6 0.08% 0.08%
B 7981 7981 156 156 1.95% 1.95%
C 7981 7981 1187 1187 14.87% 14.87%
D 7980 7980 4740 4740 59.40% 59.40%

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 7 206 52455 243.91 857 833 211.6
A 8 6 37099 171.35 857 833 211.6
A 4 3 28698 131.66 857 833 211.6
B 10 14 314872 1745.88 834 803 179.9
B 5 185 169594 938.29 834 803 179.9
B 9 251 117228 647.19 834 803 179.9
C 1 241 3495993 16296.64 779 770 214.5
C 15 147 191641 889.94 779 770 214.5
C 14 254 166844 774.33 779 770 214.5
D 8 176 13195548 86799.26 524 500 152.0
D 2 62 492525 3236.62 524 500 152.0
D 3 12 489081 3213.97 524 500 152.0

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