ASTROSAT CZTI

Data Quality Report

Orbit 53781

Creation date: 2025-09-06T20:37:00.948247
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/AS1A14_022T04_9000006506_53781cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53781cztM0_level2_quad_clean.evt
Size (bytes)1,052,680,32080,049,600
Size1003.9 MB 76.3 MB
Events in quadrant A17,929,07510,097
Events in quadrant B4,947,508735,172
Events in quadrant C9,107,278577,427
Events in quadrant D6,412,560587,216

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05837134
B01978912
C03224630
D02411926

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7377729898.929104%
B73781582.141502%
C7377126917.202115%
D73756458.745763%

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 7381 7381 6448 6448 87.36% 87.36%
B 7382 7381 69 69 0.93% 0.93%
C 7382 7381 1211 1211 16.40% 16.41%
D 7382 7379 670 670 9.08% 9.08%

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 63 15744533 323378.31 188 184 48.7
A 3 78 1330456 27322.89 188 184 48.7
A 8 6 28124 573.87 188 184 48.7
B 7 0 1089087 6468.8 777 748 168.2
B 5 250 185506 1098.15 777 748 168.2
B 5 185 184350 1091.28 777 748 168.2
C 15 224 2870863 14417.5 724 721 199.1
C 15 158 2289215 11495.72 724 721 199.1
C 15 147 213357 1068.13 724 721 199.1
D 1 241 2297478 10760.26 749 716 213.4
D 7 70 334734 1564.86 749 716 213.4
D 3 12 123624 575.82 749 716 213.4

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