ASTROSAT CZTI

Data Quality Report

Orbit 56141

Creation date: 2026-02-12T15:40:14.342790
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_083T03_9000006548_56141cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56141cztM0_level2_quad_clean.evt
Size (bytes)533,396,16099,734,400
Size508.7 MB 95.1 MB
Events in quadrant A6,958,275589,206
Events in quadrant B3,837,168714,092
Events in quadrant C3,685,581644,424
Events in quadrant D4,726,728590,036

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0254142
B0162942
C0159154
D0188132

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6913102114.769275%
B69142503.615852%
C69131732.502531%
D69133244.686822%

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 8858 6913 922 922 10.41% 13.34%
B 8859 6914 97 97 1.09% 1.40%
C 8858 6913 68 68 0.77% 0.98%
D 8858 6913 219 219 2.47% 3.17%

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 2111627 11988.25 712 693 176.1
A 3 14 927643 5264.26 712 693 176.1
A 7 64 484273 2746.31 712 693 176.1
B 0 171 407239 2491.75 756 728 163.1
B 5 172 114732 698.8 756 728 163.1
B 10 247 89164 542.08 756 728 163.1
C 12 252 376546 1854.12 746 739 202.7
C 12 254 171257 841.29 746 739 202.7
C 1 16 131986 647.53 746 739 202.7
D 2 62 695021 3335.42 739 704 208.2
D 11 129 311631 1493.66 739 704 208.2
D 2 31 201059 962.48 739 704 208.2

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