ASTROSAT CZTI

Data Quality Report

Orbit 58541

Creation date: 2026-07-24T13:27:05.395651
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_044T04_9000006592_58541cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58541cztM0_level2_quad_clean.evt
Size (bytes)415,091,52097,974,720
Size395.9 MB 93.4 MB
Events in quadrant A3,806,404641,136
Events in quadrant B3,696,621693,045
Events in quadrant C3,341,599617,679
Events in quadrant D4,025,684570,267

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154032
B0152582
C0144452
D0161752

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63661251.963556%
B63661352.120641%
C6366731.146717%
D63661251.963556%

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 7606 6367 88 88 1.16% 1.38%
B 7606 6367 58 58 0.76% 0.91%
C 7606 6367 55 55 0.72% 0.86%
D 7606 6367 130 130 1.71% 2.04%

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 10 17 466388 2619.18 712 695 177.8
A 3 14 440774 2475.12 712 695 177.8
A 3 244 47808 264.98 712 695 177.8
B 0 171 302914 1977.12 710 685 152.9
B 0 186 234286 1528.17 710 685 152.9
B 10 247 51410 331.83 710 685 152.9
C 4 5 276875 1441.05 692 685 191.7
C 6 223 117604 610.04 692 685 191.7
C 12 252 75537 390.55 692 685 191.7
D 3 12 317536 1604.9 684 654 197.4
D 2 153 236052 1192.21 684 654 197.4
D 2 249 194264 980.57 684 654 197.4

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