ASTROSAT CZTI

Data Quality Report

Orbit 16982

Creation date: 2024-06-27T17:30:41.520348
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/AS1T03_058T01_9000002522_16982cztM0_level2.evt modeM0/AS1T03_058T01_9000002522_16982cztM0_level2_quad_clean.evt
Size (bytes)660,919,680117,504,000
Size630.3 MB 112.1 MB
Events in quadrant A3,597,183780,589
Events in quadrant B4,135,585785,662
Events in quadrant C5,065,285762,659
Events in quadrant D6,688,702686,442

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160952
B0172752
C0201742
D0251573

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78112162.765331%
B78112763.533478%
C78113644.660095%
D7810125216.030730%

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 8072 7814 0 0 0.00% 0.00%
B 8072 7814 22 22 0.27% 0.28%
C 8072 7814 10 10 0.12% 0.13%
D 8071 7813 750 750 9.29% 9.60%

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 12 189 10808 52.59 933 912 188.2
A 0 226 8178 38.61 933 912 188.2
A 12 194 6976 32.22 933 912 188.2
B 7 220 231717 1305.3 932 907 176.8
B 3 64 82325 460.44 932 907 176.8
B 15 35 38107 210.37 932 907 176.8
C 3 233 1438271 6935.95 894 896 207.2
C 14 238 137029 656.9 894 896 207.2
C 13 61 6277 25.96 894 896 207.2
D 1 52 3357757 16513.79 847 821 203.3
D 2 152 61884 300.39 847 821 203.3
D 2 234 32488 155.78 847 821 203.3

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