ASTROSAT CZTI

Data Quality Report

Orbit 54778

Creation date: 2025-11-14T20:46:04.857941
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_103T01_9000006524_54778cztM0_level2.fits modeM0/AS1A14_103T01_9000006524_54778cztM0_level2_quad_clean.evt
Size (bytes)703,814,40088,416,000
Size671.2 MB 84.3 MB
Events in quadrant A3,240,015650,359
Events in quadrant B10,039,146440,362
Events in quadrant C6,863,822566,524
Events in quadrant D5,387,032550,198

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146942
B0344192
C0250802
D0208062

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67421612.388015%
B6741284642.219255%
C674195314.137368%
D674168710.191366%

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 7822 6743 36 36 0.46% 0.53%
B 7821 6742 2361 2361 30.19% 35.02%
C 7821 6742 739 739 9.45% 10.96%
D 7821 6742 514 514 6.57% 7.62%

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 13 248 223731 1200.05 745 723 185.8
A 5 240 61310 326.03 745 723 185.8
A 4 3 20930 108.74 745 723 185.8
B 2 249 7554441 63775.24 551 530 118.4
B 5 185 165417 1392.09 551 530 118.4
B 0 245 45724 381.56 551 530 118.4
C 9 38 3478279 18385.15 688 681 189.2
C 12 252 279781 1475.53 688 681 189.2
C 14 254 158296 833.27 688 681 189.2
D 3 12 840267 4271.83 698 668 196.5
D 3 224 442415 2247.58 698 668 196.5
D 15 94 397114 2017.09 698 668 196.5

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