ASTROSAT CZTI

Data Quality Report

Orbit 58115

Creation date: 2026-06-25T12:14:09.847497
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_042T02_9000006586_58115cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58115cztM0_level2_quad_clean.evt
Size (bytes)571,262,400105,120,000
Size544.8 MB 100.3 MB
Events in quadrant A3,544,393713,294
Events in quadrant B5,855,448737,094
Events in quadrant C3,313,793680,220
Events in quadrant D7,850,397530,350

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157182
B0225312
C0154622
D0284592

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75001111.480000%
B75004716.280000%
C7500700.933333%
D7501137218.290895%

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 8965 7502 25 25 0.28% 0.33%
B 8965 7502 253 253 2.82% 3.37%
C 8965 7502 5 5 0.06% 0.07%
D 8966 7503 1238 1238 13.81% 16.50%

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 11 3 127075 617.62 837 814 204.4
A 3 245 104609 507.72 837 814 204.4
A 12 3 26013 123.26 837 814 204.4
B 10 128 2340499 13374.41 814 783 174.9
B 4 201 79715 451.2 814 783 174.9
B 0 63 63707 359.69 814 783 174.9
C 1 16 35084 152.52 816 807 224.7
C 13 3 22675 97.31 816 807 224.7
C 9 38 20078 85.75 816 807 224.7
D 12 110 3466863 16247.69 757 724 213.3
D 2 249 700134 3278.52 757 724 213.3
D 8 160 416582 1949.35 757 724 213.3

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