ASTROSAT CZTI

Data Quality Report

Orbit 54018

Creation date: 2025-09-23T12:39:33.121417
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_041T01_9000006510_54018cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54018cztM0_level2_quad_clean.evt
Size (bytes)2,480,042,880348,264,000
Size2.3 GB 332.1 MB
Events in quadrant A13,173,9622,526,524
Events in quadrant B18,562,4242,677,418
Events in quadrant C15,300,3412,359,083
Events in quadrant D42,664,5051,112,386

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05480
B05480
C05480
D05480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0595719
B0743254
C0661094
D014552323

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A271685522.031802%
B2717014755.428782%
C271708583.157895%
D271681370750.452739%

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 32130 27174 243 243 0.76% 0.89%
B 32130 27175 767 767 2.39% 2.82%
C 32130 27175 653 653 2.03% 2.40%
D 32131 27171 9477 9477 29.49% 34.88%

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 15 174 829374 1171.22 2854 2774 705.8
A 8 249 796640 1124.84 2854 2774 705.8
A 8 6 103360 142.52 2854 2774 705.8
B 5 250 2742931 4663.82 2799 2704 587.6
B 0 213 1390642 2362.25 2799 2704 587.6
B 2 2 1077332 1829.0 2799 2704 587.6
C 4 5 1245212 1645.86 2757 2734 754.9
C 14 80 483107 636.33 2757 2734 754.9
C 5 10 452942 596.37 2757 2734 754.9
D 8 176 32671092 62802.92 1838 1760 520.2
D 2 165 1159532 2225.68 1838 1760 520.2
D 10 172 226863 432.73 1838 1760 520.2

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