ASTROSAT CZTI

Data Quality Report

Orbit 20060

Creation date: 2024-06-27T18:10:44.151431
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_117T01_9000002988_20060cztM0_level2.evt modeM0/AS1T03_117T01_9000002988_20060cztM0_level2_quad_clean.evt
Size (bytes)497,188,80069,229,440
Size474.2 MB 66.0 MB
Events in quadrant A3,904,515421,801
Events in quadrant B3,590,261427,321
Events in quadrant C3,519,326400,231
Events in quadrant D3,610,439401,785

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155982
B0145462
C0142252
D0146263

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63702564.018838%
B63701382.166405%
C63701312.056515%
D6369981.538703%

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 7615 6371 92 92 1.21% 1.44%
B 7615 6371 6 6 0.08% 0.09%
C 7615 6371 0 0 0.00% 0.00%
D 7614 6370 9 9 0.12% 0.14%

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 14 238 393889 2187.64 909 894 179.6
A 14 254 9389 47.29 909 894 179.6
A 0 226 7900 39.0 909 894 179.6
B 4 80 30007 172.42 901 884 168.9
B 3 64 22395 127.35 901 884 168.9
B 12 111 19664 111.18 901 884 168.9
C 14 238 138441 696.02 859 871 197.7
C 4 175 19060 92.03 859 871 197.7
C 3 233 7615 34.12 859 871 197.7
D 1 52 263256 1236.82 885 859 212.2
D 2 234 23074 104.71 885 859 212.2
D 14 226 8731 37.11 885 859 212.2

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