ASTROSAT CZTI

Data Quality Report

Orbit 54456

Creation date: 2025-10-22T06:14:40.906799
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_54456cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54456cztM0_level2_quad_clean.evt
Size (bytes)494,570,88096,364,800
Size471.7 MB 91.9 MB
Events in quadrant A3,035,715645,435
Events in quadrant B3,200,534690,722
Events in quadrant C6,443,264560,048
Events in quadrant D5,104,664551,916

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142252
B0145882
C0238652
D0201052

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6731741.099391%
B67311181.753083%
C673189413.281830%
D67314887.250037%

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 8796 6733 16 16 0.18% 0.24%
B 8796 6733 28 28 0.32% 0.42%
C 8796 6733 732 732 8.32% 10.87%
D 8796 6733 318 318 3.62% 4.72%

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 9 149120 831.17 721 705 178.6
A 4 3 36181 198.68 721 705 178.6
A 13 254 13177 69.85 721 705 178.6
B 0 213 91993 595.85 715 688 153.2
B 5 185 84021 543.83 715 688 153.2
B 7 252 81124 524.92 715 688 153.2
C 7 64 2136642 11557.76 674 668 184.8
C 13 3 732047 3957.49 674 668 184.8
C 5 144 527938 2853.06 674 668 184.8
D 7 70 993195 5019.16 686 654 197.8
D 8 176 869419 4393.24 686 654 197.8
D 10 199 178125 897.45 686 654 197.8

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