ASTROSAT CZTI

Data Quality Report

Orbit 51667

Creation date: 2025-04-22T12:01:00.715255
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/AS1A13_031T01_9000006462_51667cztM0_level2.fits modeM0/AS1A13_031T01_9000006462_51667cztM0_level2_quad_clean.evt
Size (bytes)666,388,80099,020,160
Size635.5 MB 94.4 MB
Events in quadrant A8,753,901523,946
Events in quadrant B5,129,668725,081
Events in quadrant C5,821,363623,038
Events in quadrant D4,410,128629,688

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0309923
B0200682
C0223682
D0183022

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7122211829.738837%
B71224085.728728%
C712382811.624316%
D71232673.748421%

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 9087 7123 1973 1973 21.71% 27.70%
B 9087 7123 235 235 2.59% 3.30%
C 9088 7125 705 705 7.76% 9.89%
D 9088 7125 259 259 2.85% 3.64%

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 64 5635865 36278.58 623 610 155.3
A 12 3 119218 763.57 623 610 155.3
A 5 240 102936 658.75 623 610 155.3
B 5 172 849375 5255.9 749 723 161.5
B 1 223 139004 856.41 749 723 161.5
B 4 170 130938 806.45 749 723 161.5
C 15 189 2155073 10893.54 714 708 197.8
C 13 3 283927 1432.1 714 708 197.8
C 0 209 151185 760.89 714 708 197.8
D 6 42 734156 3581.11 733 708 204.8
D 8 176 291566 1420.13 733 708 204.8
D 1 3 120071 582.8 733 708 204.8

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