ASTROSAT CZTI

Data Quality Report

Orbit 16181

Creation date: 2024-06-27T17:19:01.635941
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/AS1T02_109T01_9000002386_16181cztM0_level2.evt modeM0/AS1T02_109T01_9000002386_16181cztM0_level2_quad_clean.evt
Size (bytes)1,622,612,160273,870,720
Size1.5 GB 261.2 MB
Events in quadrant A11,709,0511,724,058
Events in quadrant B10,990,2271,761,827
Events in quadrant C11,270,9381,667,844
Events in quadrant D13,692,6021,634,030

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0486776
B0459415
C0471075
D0550985

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04480
B04480
C04480
D04480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0450
B0450
C0450
D0460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A218864311.969295%
B218862301.050900%
C218862541.160559%
D218868563.911176%

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 26408 21891 138 138 0.52% 0.63%
B 26408 21891 4 4 0.02% 0.02%
C 26408 21891 0 0 0.00% 0.00%
D 26408 21891 614 614 2.33% 2.80%

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 15 174 680430 1235.51 2742 2692 548.5
A 8 247 411791 745.78 2742 2692 548.5
A 15 157 77646 136.64 2742 2692 548.5
B 0 229 76723 145.05 2732 2667 510.5
B 12 111 60404 113.09 2732 2667 510.5
B 11 111 50943 94.56 2732 2667 510.5
C 7 247 442016 726.03 2608 2625 605.2
C 14 238 406478 667.31 2608 2625 605.2
C 3 233 212905 347.46 2608 2625 605.2
D 5 222 2018336 3126.55 2639 2559 644.7
D 2 33 1109644 1717.13 2639 2559 644.7
D 10 70 266147 408.83 2639 2559 644.7

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