ASTROSAT CZTI

Data Quality Report

Orbit 37144

Creation date: 2024-06-27T21:36:08.466356
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/AS1A11_079T01_9000005284_37144cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37144cztM0_level2_quad_clean.evt
Size (bytes)448,960,32096,289,920
Size428.2 MB 91.8 MB
Events in quadrant A2,926,749664,418
Events in quadrant B3,738,662637,066
Events in quadrant C3,159,451640,156
Events in quadrant D3,417,216608,281

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118522
B0142531
C0126321
D0133791

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5229100.191241%
B52293967.573150%
C5229390.745841%
D52291172.237522%

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 7321 5230 0 0 0.00% 0.00%
B 7321 5230 302 302 4.13% 5.77%
C 7321 5230 26 26 0.36% 0.50%
D 7321 5230 102 102 1.39% 1.95%

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 10 83 237306 1743.44 690 680 135.7
A 9 143 21098 150.44 690 680 135.7
A 13 254 7591 50.92 690 680 135.7
B 5 172 680883 5489.76 654 639 123.9
B 5 184 468046 3772.11 654 639 123.9
B 12 111 14546 112.23 654 639 123.9
C 0 10 288334 1898.98 654 660 151.5
C 15 214 243082 1600.26 654 660 151.5
C 14 254 51994 338.86 654 660 151.5
D 2 249 356798 2249.91 659 645 158.3
D 12 235 97686 613.03 659 645 158.3
D 12 227 94684 594.07 659 645 158.3

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