ASTROSAT CZTI

Data Quality Report

Orbit 51161

Creation date: 2025-03-14T09:34:00.741175
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/AS1C07_001T01_9000006454_51161cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51161cztM0_level2_quad_clean.evt
Size (bytes)712,638,72088,125,120
Size679.6 MB 84.0 MB
Events in quadrant A11,860,382372,410
Events in quadrant B4,433,697676,581
Events in quadrant C4,134,083612,992
Events in quadrant D5,443,171548,749

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0397691
B0176721
C0169151
D0210351

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6564307046.770262%
B65642734.159049%
C65641792.726996%
D65643735.682511%

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 7653 6564 3038 3038 39.70% 46.28%
B 7654 6564 173 173 2.26% 2.64%
C 7654 6564 130 130 1.70% 1.98%
D 7654 6564 307 307 4.01% 4.68%

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 12 80 4234502 30281.85 561 547 139.8
A 14 254 3644419 26061.5 561 547 139.8
A 12 3 1144060 8178.57 561 547 139.8
B 10 60 563626 3877.01 677 653 145.2
B 8 128 427341 2938.46 677 653 145.2
B 4 171 130105 891.49 677 653 145.2
C 13 3 262526 1426.28 663 658 183.6
C 4 13 226670 1230.99 663 658 183.6
C 10 171 207639 1127.34 663 658 183.6
D 8 176 2183640 12147.39 635 614 179.7
D 7 80 279023 1549.2 635 614 179.7
D 10 172 97916 541.43 635 614 179.7

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