ASTROSAT CZTI

Data Quality Report

Orbit 53571

Creation date: 2025-08-23T16:40:15.892565
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_004T05_9000006502_53571cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53571cztM0_level2_quad_clean.evt
Size (bytes)916,269,12080,703,360
Size873.8 MB 77.0 MB
Events in quadrant A10,583,332354,529
Events in quadrant B4,002,328709,424
Events in quadrant C8,610,975486,773
Events in quadrant D10,224,186443,516

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0358792
B0160392
C0299932
D0348542

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6435333551.825952%
B64352513.900544%
C6435181528.205128%
D6435188029.215229%

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 7600 6436 2382 2382 31.34% 37.01%
B 7600 6436 112 112 1.47% 1.74%
C 7600 6436 1510 1510 19.87% 23.46%
D 7600 6436 1585 1585 20.86% 24.63%

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 4559533 32654.53 565 550 139.6
A 12 115 1996127 14293.67 565 550 139.6
A 3 62 1092347 7820.19 565 550 139.6
B 2 249 331828 2111.76 731 708 156.8
B 0 213 173752 1103.61 731 708 156.8
B 10 247 98461 623.43 731 708 156.8
C 15 224 2503377 14075.47 641 636 177.8
C 15 178 2450314 13777.04 641 636 177.8
C 1 241 565124 3174.69 641 636 177.8
D 2 172 4067687 24096.87 594 567 168.8
D 8 176 3282122 19442.55 594 567 168.8
D 13 153 127233 750.47 594 567 168.8

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