ASTROSAT CZTI

Data Quality Report

Orbit 04751

Creation date: 2024-06-27T14:46:21.257995
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/AS1G05_195T01_9000000598_04751cztM0_level2.evt modeM0/AS1G05_195T01_9000000598_04751cztM0_level2_quad_clean.evt
Size (bytes)588,441,60087,693,120
Size561.2 MB 83.6 MB
Events in quadrant A3,685,098525,812
Events in quadrant B4,537,163518,311
Events in quadrant C5,061,378529,213
Events in quadrant D3,982,090513,530

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169713
B0191032
C0207992
D0180242

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81791001.222643%
B81792613.191099%
C81794195.122876%
D81791371.675021%

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 9399 8181 0 0 0.00% 0.00%
B 9399 8181 109 109 1.16% 1.33%
C 9399 8181 296 296 3.15% 3.62%
D 9399 8181 54 54 0.57% 0.66%

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 0 149 38693 195.24 940 918 193.5
A 0 226 12697 60.88 940 918 193.5
A 7 16 9741 45.6 940 918 193.5
B 10 16 552749 3014.42 945 921 183.1
B 15 204 92640 501.02 945 921 183.1
B 4 80 90326 488.38 945 921 183.1
C 14 48 1465257 6984.68 902 903 209.7
C 9 237 49136 230.06 902 903 209.7
C 12 4 12221 53.98 902 903 209.7
D 13 235 224402 1014.56 906 875 220.3
D 2 136 88141 396.09 906 875 220.3
D 2 234 76803 344.63 906 875 220.3

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