ASTROSAT CZTI

Data Quality Report

Orbit 14679

Creation date: 2024-06-27T16:58:23.422315
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/AS1A04_101T01_9000002170_14679cztM0_level2.evt modeM0/AS1A04_101T01_9000002170_14679cztM0_level2_quad_clean.evt
Size (bytes)496,938,24092,733,120
Size473.9 MB 88.4 MB
Events in quadrant A4,220,739593,937
Events in quadrant B3,334,545588,206
Events in quadrant C3,663,867588,037
Events in quadrant D3,382,718577,817

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171223
B0142022
C0148632
D0144842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6596560.848999%
B6596520.788357%
C6596330.500303%
D6596961.455428%

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 8762 6598 2 2 0.02% 0.03%
B 8762 6597 2 2 0.02% 0.03%
C 8762 6598 1 1 0.01% 0.02%
D 8762 6598 79 79 0.90% 1.20%

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 15 854554 5127.53 824 806 166.5
A 0 253 152306 909.89 824 806 166.5
A 12 189 17368 99.47 824 806 166.5
B 10 16 70131 445.76 814 793 155.6
B 0 219 44136 278.64 814 793 155.6
B 0 197 18645 114.77 814 793 155.6
C 3 233 551916 2992.13 794 799 184.2
C 0 207 12801 65.16 794 799 184.2
C 13 61 5708 26.65 794 799 184.2
D 10 199 138129 651.33 787 774 210.9
D 2 14 78440 368.29 787 774 210.9
D 12 110 48375 225.72 787 774 210.9

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