ASTROSAT CZTI

Data Quality Report

Orbit 02958

Creation date: 2024-06-27T14:22:44.468814
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/AS1G05_238T04_9000000416_02958cztM0_level2.evt modeM0/AS1G05_238T04_9000000416_02958cztM0_level2_common_clean.evt
Size (bytes)412,920,00052,571,520
Size393.8 MB 50.1 MB
Events in quadrant A2,305,969307,857
Events in quadrant B2,365,238307,098
Events in quadrant C5,078,909307,478
Events in quadrant D2,402,597307,008

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108823
B0110432
C0187842
D0111732

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5184290.559414%
B5184691.331019%
C518461411.844136%
D5184280.540123%

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 7310 5185 18 18 0.25% 0.35%
B 7310 5185 49 49 0.67% 0.95%
C 7310 5185 597 597 8.17% 11.51%
D 7310 5185 23 23 0.31% 0.44%

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 0 31 101795 948.44 521 509 106.8
A 8 15 44175 408.89 521 509 106.8
A 14 249 39097 361.34 521 509 106.8
B 2 249 179601 1726.54 532 520 103.7
B 3 27 48690 464.41 532 520 103.7
B 4 170 31119 295.01 532 520 103.7
C 1 192 2955975 25739.19 487 488 114.8
C 8 161 70976 613.88 487 488 114.8
C 6 80 59131 510.72 487 488 114.8
D 1 31 85540 669.18 506 492 127.1
D 13 239 63007 491.88 506 492 127.1
D 14 81 39912 310.16 506 492 127.1

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
Veto Counter