ASTROSAT CZTI

Data Quality Report

Orbit 30161

Creation date: 2024-06-27T20:11:40.064444
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/AS1A10_097T03_9000004336_30161cztM0_level2.evt modeM0/AS1A10_097T03_9000004336_30161cztM0_level2_quad_clean.evt
Size (bytes)517,121,28086,328,000
Size493.2 MB 82.3 MB
Events in quadrant A3,218,613551,526
Events in quadrant B5,215,583543,411
Events in quadrant C3,307,485527,615
Events in quadrant D3,470,192529,593

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137792
B0201302
C0139762
D0145473

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6629430.648665%
B6629931.402927%
C6629600.905114%
D6628400.603500%

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 7654 6630 4 4 0.05% 0.06%
B 7654 6630 5 5 0.07% 0.08%
C 7654 6630 0 0 0.00% 0.00%
D 7653 6629 18 18 0.24% 0.27%

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 8 192 26340 154.08 827 810 165.7
A 13 254 12739 71.99 827 810 165.7
A 3 137 8261 44.97 827 810 165.7
B 6 159 1941735 12375.5 817 797 156.8
B 4 171 33266 207.02 817 797 156.8
B 0 190 23749 146.34 817 797 156.8
C 14 238 127569 688.7 792 799 184.1
C 3 233 66835 358.75 792 799 184.1
C 2 114 15500 79.86 792 799 184.1
D 8 195 174889 853.99 795 778 203.9
D 12 233 82242 399.57 795 778 203.9
D 2 250 62952 304.95 795 778 203.9

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