ASTROSAT CZTI

Data Quality Report

Orbit 10735

Creation date: 2024-06-27T16:03:05.256880
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/AS1A03_078T01_9000001546_10735cztM0_level2.evt modeM0/AS1A03_078T01_9000001546_10735cztM0_level2_quad_clean.evt
Size (bytes)619,611,84062,481,600
Size590.9 MB 59.6 MB
Events in quadrant A4,741,297367,392
Events in quadrant B4,393,901368,890
Events in quadrant C3,188,059371,118
Events in quadrant D5,985,398313,942

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184333
B0174492
C0140192
D0221642

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67363034.498219%
B67362784.127078%
C6736650.964964%
D673685312.663302%

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 7756 6736 149 149 1.92% 2.21%
B 7756 6736 120 120 1.55% 1.78%
C 7756 6736 4 4 0.05% 0.06%
D 7756 6736 742 742 9.57% 11.02%

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 15 239 1467338 8728.81 824 805 168.0
A 14 254 44965 262.84 824 805 168.0
A 13 251 22739 130.55 824 805 168.0
B 4 239 940696 5935.88 821 801 158.3
B 15 204 87705 548.84 821 801 158.3
B 0 219 72865 455.12 821 801 158.3
C 14 234 59384 310.17 802 805 188.9
C 13 61 5797 26.43 802 805 188.9
C 3 202 2099 6.85 802 805 188.9
D 2 16 2665567 14426.09 766 745 184.7
D 10 172 114098 613.64 766 745 184.7
D 13 249 62683 335.3 766 745 184.7

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