ASTROSAT CZTI

Data Quality Report

Orbit 07771

Creation date: 2024-06-27T15:23:46.960486
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/AS1A02_132T01_9000001068_07771cztM0_level2.evt modeM0/AS1A02_132T01_9000001068_07771cztM0_level2_quad_clean.evt
Size (bytes)473,774,400101,448,000
Size451.8 MB 96.7 MB
Events in quadrant A3,170,183654,685
Events in quadrant B3,404,083674,050
Events in quadrant C3,156,503666,125
Events in quadrant D4,164,568612,745

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137623
B0143632
C0136912
D0166922

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6665280.420105%
B6665350.525131%
C666560.090023%
D66651321.980495%

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 7945 6666 10 10 0.13% 0.15%
B 7945 6666 7 7 0.09% 0.11%
C 7945 6666 0 0 0.00% 0.00%
D 7945 6666 139 139 1.75% 2.09%

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 3 1 32507 192.41 815 799 164.8
A 0 226 7551 40.97 815 799 164.8
A 12 194 7116 38.33 815 799 164.8
B 4 173 102222 644.56 831 812 157.3
B 4 239 19490 118.72 831 812 157.3
B 0 214 16938 102.5 831 812 157.3
C 13 61 6291 29.08 807 812 188.4
C 12 4 5972 27.39 807 812 188.4
C 14 67 3289 13.15 807 812 188.4
D 12 221 693025 3554.24 790 765 194.8
D 1 52 384856 1972.02 790 765 194.8
D 2 152 56136 284.29 790 765 194.8

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