ASTROSAT CZTI

Data Quality Report

Orbit 10889

Creation date: 2024-06-27T16:05:15.338090
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_055T01_9000001574_10889cztM0_level2.evt modeM0/AS1A04_055T01_9000001574_10889cztM0_level2_quad_clean.evt
Size (bytes)621,204,480108,426,240
Size592.4 MB 103.4 MB
Events in quadrant A4,527,443691,281
Events in quadrant B5,297,534678,477
Events in quadrant C3,339,151719,229
Events in quadrant D5,131,508662,942

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185543
B0209872
C0156062
D0204912

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76332573.366959%
B76336118.004716%
C7633180.235818%
D76333414.467444%

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 7893 7635 124 124 1.57% 1.62%
B 7893 7635 371 371 4.70% 4.86%
C 7893 7635 1 1 0.01% 0.01%
D 7893 7635 284 284 3.60% 3.72%

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 5 960483 5352.89 870 850 179.3
A 5 16 173505 963.08 870 850 179.3
A 1 162 13457 70.32 870 850 179.3
B 4 239 1815011 11102.04 852 832 163.4
B 0 182 82572 500.22 852 832 163.4
B 0 214 22333 131.58 852 832 163.4
C 14 234 10376 48.2 849 851 197.6
C 13 61 6371 27.94 849 851 197.6
C 4 222 5373 22.88 849 851 197.6
D 10 199 707186 3493.9 832 805 202.2
D 5 97 362723 1790.12 832 805 202.2
D 8 195 324925 1603.16 832 805 202.2

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