ASTROSAT CZTI

Data Quality Report

Orbit 43754

Creation date: 2024-06-27T22:55:23.443695
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/AS1A13_026T01_9000005904_43754cztM0_level2.fits modeM0/AS1A13_026T01_9000005904_43754cztM0_level2_quad_clean.evt
Size (bytes)811,414,080109,880,640
Size773.8 MB 104.8 MB
Events in quadrant A9,252,321707,083
Events in quadrant B4,885,946799,281
Events in quadrant C5,769,542764,170
Events in quadrant D9,567,509549,856

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0327833
B0193390
C0221240
D0335110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7263101113.919868%
B72642162.973568%
C72643685.066079%
D7264206428.414097%

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 7263 7263 691 691 9.51% 9.51%
B 7264 7264 119 119 1.64% 1.64%
C 7264 7264 339 339 4.67% 4.67%
D 7264 7263 1227 1227 16.89% 16.89%

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 63 4301874 26290.45 781 767 163.6
A 10 83 955493 5835.75 781 767 163.6
A 15 223 430720 2628.08 781 767 163.6
B 0 200 884343 5561.29 811 789 158.9
B 5 235 143741 899.77 811 789 158.9
B 0 219 123238 770.72 811 789 158.9
C 15 158 2182736 11801.16 786 793 184.9
C 15 157 229132 1234.98 786 793 184.9
C 3 233 111837 600.59 786 793 184.9
D 1 52 1791354 9687.79 706 684 184.8
D 4 212 1240888 6709.69 706 684 184.8
D 5 235 763751 4128.31 706 684 184.8

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