ASTROSAT CZTI

Data Quality Report

Orbit 55376

Creation date: 2025-12-23T05:02:44.557963
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_009T01_9000006534_55376cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55376cztM0_level2_quad_clean.evt
Size (bytes)446,878,080101,050,560
Size426.2 MB 96.4 MB
Events in quadrant A5,560,739630,477
Events in quadrant B3,513,728704,255
Events in quadrant C3,144,406639,579
Events in quadrant D3,779,621598,385

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214392
B0157162
C0148752
D0164872

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69914095.850379%
B69911602.288657%
C6991630.901159%
D69911632.331569%

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 7691 6991 290 290 3.77% 4.15%
B 7691 6992 39 39 0.51% 0.56%
C 7691 6992 23 23 0.30% 0.33%
D 7691 6992 101 101 1.31% 1.44%

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 4 159 2226800 12312.21 726 709 180.8
A 12 115 325785 1797.95 726 709 180.8
A 0 8 124867 686.7 726 709 180.8
B 0 199 246483 1569.94 732 706 156.6
B 5 185 164407 1045.67 732 706 156.6
B 10 247 103646 657.55 732 706 156.6
C 13 3 169860 841.98 729 719 200.9
C 12 249 26967 130.66 729 719 200.9
C 9 38 26290 127.29 729 719 200.9
D 11 129 250728 1220.03 724 693 204.9
D 2 249 133094 646.04 724 693 204.9
D 11 176 124515 604.18 724 693 204.9

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