ASTROSAT CZTI

Data Quality Report

Orbit 22926

Creation date: 2024-06-27T18:47:37.616408
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_170T01_9000003388_22926cztM0_level2.evt modeM0/AS1T03_170T01_9000003388_22926cztM0_level2_quad_clean.evt
Size (bytes)527,060,16093,660,480
Size502.6 MB 89.3 MB
Events in quadrant A3,198,473610,018
Events in quadrant B3,394,392630,323
Events in quadrant C4,006,723602,660
Events in quadrant D4,926,077544,317

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134112
B0139822
C0159732
D0188482

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6439170.264016%
B6438250.388319%
C6438681.056229%
D64384496.974216%

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 7705 6440 0 0 0.00% 0.00%
B 7704 6439 0 0 0.00% 0.00%
C 7704 6439 1 1 0.01% 0.02%
D 7704 6439 330 330 4.28% 5.13%

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 13 254 10925 61.33 830 817 164.8
A 0 226 7052 37.83 830 817 164.8
A 3 137 6677 35.56 830 817 164.8
B 4 173 34471 217.39 838 819 154.8
B 3 64 19665 121.74 838 819 154.8
B 0 189 19529 120.86 838 819 154.8
C 6 80 665216 3568.86 815 823 186.2
C 14 238 130371 695.88 815 823 186.2
C 7 247 16446 83.92 815 823 186.2
D 1 52 1635082 8642.77 783 762 189.1
D 13 153 197860 1042.31 783 762 189.1
D 12 233 81485 426.89 783 762 189.1

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