ASTROSAT CZTI

Data Quality Report

Orbit 37810

Creation date: 2024-06-27T21:44:44.663256
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/AS1A10_103T06_9000005348_37810cztM0_level2.evt modeM0/AS1A10_103T06_9000005348_37810cztM0_level2_quad_clean.evt
Size (bytes)495,328,32099,025,920
Size472.4 MB 94.4 MB
Events in quadrant A3,163,403671,016
Events in quadrant B3,302,057681,678
Events in quadrant C2,940,077676,035
Events in quadrant D5,240,094602,655

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126373
B0131122
C0118992
D0191992

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5243260.495899%
B5243961.831013%
C5243170.324242%
D524361211.672706%

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 9339 5245 11 11 0.12% 0.21%
B 9339 5245 91 91 0.97% 1.73%
C 9339 5245 11 11 0.12% 0.21%
D 9339 5245 671 671 7.18% 12.79%

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 337525 2445.23 690 679 137.8
A 9 143 68406 491.64 690 679 137.8
A 13 248 54721 392.3 690 679 137.8
B 5 172 322639 2500.97 680 666 128.7
B 4 232 79269 610.56 680 666 128.7
B 0 189 78504 604.62 680 666 128.7
C 15 214 241432 1575.19 662 668 152.8
C 0 10 76465 495.9 662 668 152.8
C 0 207 23778 151.2 662 668 152.8
D 5 222 2228414 14312.55 644 630 155.7
D 2 249 187782 1202.37 644 630 155.7
D 10 199 114078 728.85 644 630 155.7

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