ASTROSAT CZTI

Data Quality Report

Orbit 20269

Creation date: 2024-06-27T18:13:17.042643
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/AS1A05_175T01_9000003004_20269cztM0_level2.evt modeM0/AS1A05_175T01_9000003004_20269cztM0_level2_quad_clean.evt
Size (bytes)1,711,454,400329,351,040
Size1.6 GB 314.1 MB
Events in quadrant A13,060,5122,136,589
Events in quadrant B13,687,4292,133,186
Events in quadrant C11,264,1902,063,671
Events in quadrant D12,249,7892,042,806

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0532754
B0550464
C0480394
D0516795

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04700
B04700
C04700
D04700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A232527583.259935%
B232539594.124199%
C232534631.991141%
D232524391.888010%

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 25877 23256 223 223 0.86% 0.96%
B 25878 23257 425 425 1.64% 1.83%
C 25878 23258 0 0 0.00% 0.00%
D 25877 23257 131 131 0.51% 0.56%

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 1409669 2453.82 2863 2801 573.3
A 4 2 170609 292.69 2863 2801 573.3
A 10 253 163996 281.15 2863 2801 573.3
B 4 142 1597420 2993.31 2841 2767 532.7
B 7 220 629053 1175.6 2841 2767 532.7
B 0 244 84284 153.01 2841 2767 532.7
C 14 238 431200 672.61 2748 2768 637.0
C 9 221 65072 97.81 2748 2768 637.0
C 3 233 23950 33.25 2748 2768 637.0
D 1 52 521682 769.27 2807 2733 674.6
D 11 176 452471 666.67 2807 2733 674.6
D 7 238 372073 547.49 2807 2733 674.6

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