ASTROSAT CZTI

Data Quality Report

Orbit 52506

Creation date: 2025-06-13T01:48:07.721094
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_037T01_9000006476_52506cztM0_level2.fits modeM0/AS1A13_037T01_9000006476_52506cztM0_level2_quad_clean.evt
Size (bytes)4,915,690,560529,142,400
Size4.6 GB 504.6 MB
Events in quadrant A20,341,5714,013,533
Events in quadrant B57,025,4123,238,906
Events in quadrant C51,733,1032,898,263
Events in quadrant D49,607,9342,962,162

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0903024
B01983694
C01830664
D01768734

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08560
B08560
C08560
D08560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A423175471.292625%
B423171234229.165584%
C423171121626.504714%
D42317860220.327528%

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 44337 42319 110 110 0.25% 0.26%
B 44336 42317 10340 10340 23.32% 24.43%
C 44336 42316 9744 9744 21.98% 23.03%
D 44337 42318 8104 8104 18.28% 19.15%

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 8 9 597853 529.1 4576 4466 1121.5
A 11 3 450418 397.64 4576 4466 1121.5
A 3 62 257016 225.19 4576 4466 1121.5
B 10 44 20253339 23932.11 3941 3793 846.1
B 10 254 10329142 12203.11 3941 3793 846.1
B 7 0 3898422 4602.9 3941 3793 846.1
C 15 224 26097476 24695.09 3838 3812 1056.6
C 4 5 2715637 2566.48 3838 3812 1056.6
C 13 3 2647517 2502.01 3838 3812 1056.6
D 15 93 13723643 12124.91 4025 3859 1131.5
D 6 42 11571319 10222.78 4025 3859 1131.5
D 12 17 1268898 1117.98 4025 3859 1131.5

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