ASTROSAT CZTI

Data Quality Report

Orbit 23240

Creation date: 2024-06-27T18:51:41.035319
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/AS1A08_009T01_9000003434_23240cztM0_level2.evt modeM0/AS1A08_009T01_9000003434_23240cztM0_level2_quad_clean.evt
Size (bytes)528,203,520104,126,400
Size503.7 MB 99.3 MB
Events in quadrant A3,353,355677,639
Events in quadrant B3,226,139692,777
Events in quadrant C3,917,835661,363
Events in quadrant D5,035,028644,730

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145113
B0141933
C0162793
D0195893

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6838320.467973%
B6838520.760456%
C68382283.334308%
D68384586.697865%

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 7183 6840 3 3 0.04% 0.04%
B 7183 6840 1 1 0.01% 0.01%
C 7183 6840 47 47 0.65% 0.69%
D 7183 6840 350 350 4.87% 5.12%

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 13 252 218548 1333.43 809 790 163.3
A 6 16 15566 90.48 809 790 163.3
A 13 254 10467 59.26 809 790 163.3
B 12 111 19132 117.34 812 789 156.3
B 11 111 17077 104.19 812 789 156.3
B 0 228 15635 94.97 812 789 156.3
C 8 208 631306 3449.99 779 783 182.8
C 14 238 123308 670.41 779 783 182.8
C 0 10 41246 221.4 779 783 182.8
D 7 238 956410 5228.59 750 728 182.8
D 1 52 898401 4911.22 750 728 182.8
D 12 233 103118 560.18 750 728 182.8

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