ASTROSAT CZTI

Data Quality Report

Orbit 55419

Creation date: 2025-12-26T02:24:07.119769
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_099T01_9000006536_55419cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55419cztM0_level2_quad_clean.evt
Size (bytes)554,595,84093,415,680
Size528.9 MB 89.1 MB
Events in quadrant A3,229,266654,311
Events in quadrant B4,240,741632,983
Events in quadrant C3,286,439619,840
Events in quadrant D9,247,684450,122

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147292
B0177142
C0148732
D0321642

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6759821.213197%
B67596359.394881%
C6759801.183607%
D6759186927.652020%

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 7694 6760 57 57 0.74% 0.84%
B 7694 6760 528 528 6.86% 7.81%
C 7694 6760 25 25 0.32% 0.37%
D 7694 6760 1718 1718 22.33% 25.41%

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 0 8 252758 1423.2 715 697 177.1
A 7 7 79568 445.33 715 697 177.1
A 4 3 32266 178.25 715 697 177.1
B 5 172 1419476 9914.58 674 650 143.1
B 10 247 38031 261.21 674 650 143.1
B 9 254 28640 195.59 674 650 143.1
C 13 3 193169 995.71 705 697 193.3
C 12 252 112906 580.49 705 697 193.3
C 10 64 107365 551.82 705 697 193.3
D 11 129 4043651 23202.58 617 590 174.3
D 8 48 2088453 11981.96 617 590 174.3
D 8 160 159782 913.58 617 590 174.3

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