ASTROSAT CZTI

Data Quality Report

Orbit 21730

Creation date: 2024-06-27T18:31:33.416115
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/AS1A07_010T04_9000003220_21730cztM0_level2.evt modeM0/AS1A07_010T04_9000003220_21730cztM0_level2_quad_clean.evt
Size (bytes)606,608,640103,343,040
Size578.5 MB 98.6 MB
Events in quadrant A7,235,644602,720
Events in quadrant B3,407,581702,942
Events in quadrant C3,366,865678,847
Events in quadrant D3,885,699656,495

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262841
B0147301
C0145951
D0162261

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7003182926.117378%
B70041401.998858%
C70041572.241576%
D70031882.684564%

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 7428 7004 1547 1547 20.83% 22.09%
B 7429 7005 14 14 0.19% 0.20%
C 7429 7005 0 0 0.00% 0.00%
D 7428 7004 98 98 1.32% 1.40%

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 15 236 4404929 29757.45 733 715 148.0
A 13 254 9002 55.99 733 715 148.0
A 3 137 6267 37.51 733 715 148.0
B 3 64 130625 832.86 819 797 155.9
B 0 230 23085 142.98 819 797 155.9
B 0 189 20586 126.95 819 797 155.9
C 14 238 127689 675.92 799 804 187.7
C 8 208 119011 629.69 799 804 187.7
C 10 22 5663 25.88 799 804 187.7
D 14 35 316128 1618.27 803 778 194.9
D 7 223 245156 1254.07 803 778 194.9
D 12 235 160958 821.99 803 778 194.9

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