ASTROSAT CZTI

Data Quality Report

Orbit 29431

Creation date: 2024-06-27T20:04:05.578329
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_102T05_9000004232_29431cztM0_level2.evt modeM0/AS1A10_102T05_9000004232_29431cztM0_level2_quad_clean.evt
Size (bytes)806,800,32078,871,680
Size769.4 MB 75.2 MB
Events in quadrant A3,517,078487,108
Events in quadrant B3,688,425496,864
Events in quadrant C8,259,982454,257
Events in quadrant D8,485,911450,602

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148491
B0152961
C0296371
D0304411

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71661902.651409%
B71672012.804521%
C7167111415.543463%
D716793713.073811%

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 7521 7168 0 0 0.00% 0.00%
B 7522 7169 1 1 0.01% 0.01%
C 7522 7168 312 312 4.15% 4.35%
D 7522 7169 634 634 8.43% 8.84%

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 13 254 14080 71.14 911 892 185.4
A 3 137 8873 43.05 911 892 185.4
A 0 226 7788 37.2 911 892 185.4
B 15 33 54416 311.03 897 875 172.1
B 0 190 29125 164.11 897 875 172.1
B 12 111 21621 120.52 897 875 172.1
C 3 233 4487475 22918.24 835 842 195.8
C 10 9 300442 1530.39 835 842 195.8
C 14 238 151103 767.55 835 842 195.8
D 8 195 1846739 8996.9 853 831 205.2
D 1 52 1664182 8107.12 853 831 205.2
D 13 104 916266 4461.8 853 831 205.2

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