ASTROSAT CZTI

Data Quality Report

Orbit 31260

Creation date: 2024-06-27T20:25:49.281315
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_113T01_9000004524_31260cztM0_level2.evt modeM0/AS1A10_113T01_9000004524_31260cztM0_level2_quad_clean.evt
Size (bytes)1,213,868,160194,791,680
Size1.1 GB 185.8 MB
Events in quadrant A7,176,7171,240,070
Events in quadrant B11,812,3321,227,113
Events in quadrant C7,919,9771,192,220
Events in quadrant D8,820,7661,184,456

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03140
B03140
C03140
D03140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0312514
B0466663
C0333153
D0368243

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15292540.353126%
B152922521.647920%
C152923472.269160%
D152921000.653937%

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 17277 15295 0 0 0.00% 0.00%
B 17277 15295 24 24 0.14% 0.16%
C 17277 15295 50 50 0.29% 0.33%
D 17277 15295 33 33 0.19% 0.22%

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 27149 68.25 1858 1819 371.1
A 3 137 19483 47.59 1858 1819 371.1
A 0 226 15731 37.48 1858 1819 371.1
B 6 159 4241760 12113.8 1828 1779 350.0
B 4 80 130653 368.2 1828 1779 350.0
B 0 190 108284 304.29 1828 1779 350.0
C 0 10 378221 901.68 1779 1787 417.5
C 14 238 291288 693.45 1779 1787 417.5
C 3 233 271853 646.9 1779 1787 417.5
D 8 195 1580010 3423.48 1790 1756 461.0
D 2 250 255314 550.01 1790 1756 461.0
D 12 233 75824 160.67 1790 1756 461.0

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