ASTROSAT CZTI

Data Quality Report

Orbit 21324

Creation date: 2024-06-27T18:26:23.948848
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/AS1A05_037T01_9000003144_21324cztM0_level2.evt modeM0/AS1A05_037T01_9000003144_21324cztM0_level2_quad_clean.evt
Size (bytes)517,561,92096,762,240
Size493.6 MB 92.3 MB
Events in quadrant A3,405,757624,574
Events in quadrant B3,538,662634,280
Events in quadrant C3,327,542610,990
Events in quadrant D4,933,917579,561

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145892
B0149392
C0143752
D0192552

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6911300.434091%
B6911560.810302%
C6911731.056287%
D69113154.557951%

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 7671 6912 4 4 0.05% 0.06%
B 7671 6912 4 4 0.05% 0.06%
C 7671 6912 0 0 0.00% 0.00%
D 7671 6912 252 252 3.29% 3.65%

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 11 47 27038 150.28 858 841 174.3
A 9 143 21371 117.77 858 841 174.3
A 4 2 12388 66.24 858 841 174.3
B 3 64 58884 355.09 855 836 163.5
B 0 189 53481 322.04 855 836 163.5
B 0 190 42475 254.71 855 836 163.5
C 14 238 129501 672.96 816 825 191.2
C 0 10 9501 45.37 816 825 191.2
C 13 61 5848 26.27 816 825 191.2
D 7 38 483292 2423.98 818 794 199.1
D 12 233 408464 2048.06 818 794 199.1
D 1 52 327448 1641.05 818 794 199.1

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter