ASTROSAT CZTI

Data Quality Report

Orbit 03131

Creation date: 2024-06-27T14:25:03.824205
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/AS1T01_118T01_9000000430_03131cztM0_level2.evt modeM0/AS1T01_118T01_9000000430_03131cztM0_level2_quad_clean.evt
Size (bytes)930,905,28076,610,880
Size887.8 MB 73.1 MB
Events in quadrant A4,527,001457,039
Events in quadrant B4,340,549468,204
Events in quadrant C13,966,004386,187
Events in quadrant D4,807,409439,844

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191192
B0182741
C0471571
D0200401

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81684745.803134%
B81684084.995103%
C8168343942.103330%
D81683003.672870%

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 8398 8169 119 119 1.42% 1.46%
B 8398 8168 26 26 0.31% 0.32%
C 8398 8169 2734 2734 32.56% 33.47%
D 8398 8169 147 147 1.75% 1.80%

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 50 348593 1698.59 985 960 204.7
A 12 247 208073 1011.99 985 960 204.7
A 0 13 105807 512.3 985 960 204.7
B 15 204 199423 1001.01 1001 974 198.2
B 10 252 62808 311.9 1001 974 198.2
B 2 249 46407 229.17 1001 974 198.2
C 0 219 10466835 54636.92 823 824 191.6
C 6 80 99779 516.59 823 824 191.6
C 14 223 59846 308.12 823 824 191.6
D 2 136 203164 864.98 956 925 233.8
D 13 223 194364 827.34 956 925 233.8
D 12 233 149845 636.93 956 925 233.8

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