ASTROSAT CZTI

Data Quality Report

Orbit 58529

Creation date: 2026-07-23T11:09:50.008348
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_58529cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58529cztM0_level2_quad_clean.evt
Size (bytes)521,735,04091,742,400
Size497.6 MB 87.5 MB
Events in quadrant A3,092,618612,940
Events in quadrant B3,635,751657,450
Events in quadrant C6,888,490529,216
Events in quadrant D5,177,002512,025

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140702
B0153542
C0250642
D0202942

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6683540.808020%
B66841281.915021%
C668495014.213046%
D66846039.021544%

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 9123 6880 5 5 0.05% 0.07%
B 9124 6880 36 36 0.39% 0.52%
C 9124 6871 895 895 9.81% 13.03%
D 9124 6880 567 567 6.21% 8.24%

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 3 14 41517 219.85 749 729 185.5
A 11 31 40265 213.1 749 729 185.5
A 10 17 33335 175.75 749 729 185.5
B 8 234 243967 1514.65 745 720 160.6
B 0 171 108425 670.66 745 720 160.6
B 8 128 87294 539.08 745 720 160.6
C 4 5 1940845 10144.21 691 684 191.3
C 5 10 1285418 6717.28 691 684 191.3
C 12 252 607771 3174.18 691 684 191.3
D 2 249 1117034 5691.76 689 659 196.1
D 3 12 674643 3436.26 689 659 196.1
D 2 31 269401 1370.16 689 659 196.1

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