ASTROSAT CZTI

Data Quality Report

Orbit 56930

Creation date: 2026-04-06T17:53:55.145667
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_083T14_9000006564_56930cztM0_level2.fits modeM0/AS1A14_083T14_9000006564_56930cztM0_level2_quad_clean.evt
Size (bytes)835,413,12079,410,240
Size796.7 MB 75.7 MB
Events in quadrant A5,536,444623,797
Events in quadrant B5,941,265644,586
Events in quadrant C3,243,146639,468
Events in quadrant D15,664,82114,689

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211649
B0224001
C0149431
D0512371

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69236078.767875%
B692490813.113807%
C69241351.949740%
D6924679298.093588%

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 7848 6923 457 457 5.82% 6.60%
B 7849 6924 668 668 8.51% 9.65%
C 7849 6924 60 60 0.76% 0.87%
D 7848 6923 5623 5623 71.65% 81.22%

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 7 64 2423843 13523.27 719 699 179.2
A 10 251 138895 771.26 719 699 179.2
A 3 14 118389 656.81 719 699 179.2
B 5 172 2078349 13973.48 697 671 148.7
B 5 185 675927 4541.45 697 671 148.7
B 10 16 158424 1060.97 697 671 148.7
C 13 3 160161 802.8 722 715 198.6
C 1 28 89371 446.37 722 715 198.6
C 1 12 52656 261.52 722 715 198.6
D 12 33 12564607 183317.17 237 226 68.5
D 2 249 1723325 25140.41 237 226 68.5
D 3 12 95156 1385.05 237 226 68.5

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