ASTROSAT CZTI

Data Quality Report

Orbit 54097

Creation date: 2025-09-28T03:07:07.765257
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_54097cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54097cztM0_level2_quad_clean.evt
Size (bytes)529,951,68093,862,080
Size505.4 MB 89.5 MB
Events in quadrant A3,925,740630,527
Events in quadrant B5,555,562632,325
Events in quadrant C3,438,318600,908
Events in quadrant D6,183,233516,921

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165671
B0212821
C0151182
D0230441

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66222193.307158%
B662275711.431592%
C66211522.295726%
D662282412.443371%

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 7577 6623 197 197 2.60% 2.97%
B 7577 6623 567 567 7.48% 8.56%
C 7576 6622 108 108 1.43% 1.63%
D 7577 6623 663 663 8.75% 10.01%

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 12 115 616427 3576.31 690 673 172.2
A 15 174 273191 1582.79 690 673 172.2
A 0 8 109347 631.18 690 673 172.2
B 5 250 1750371 12320.28 669 647 142.0
B 15 20 252499 1773.36 669 647 142.0
B 0 213 203585 1428.94 669 647 142.0
C 13 3 197392 1040.18 681 672 189.1
C 1 241 141101 742.54 681 672 189.1
C 1 16 138779 730.26 681 672 189.1
D 15 78 2175785 11783.09 643 613 184.6
D 8 176 667678 3613.55 643 613 184.6
D 3 12 219098 1183.55 643 613 184.6

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