ASTROSAT CZTI

Data Quality Report

Orbit 58268

Creation date: 2026-07-05T18:11:20.309813
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_044T03_9000006588_58268cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58268cztM0_level2_quad_clean.evt
Size (bytes)693,126,72093,525,120
Size661.0 MB 89.2 MB
Events in quadrant A5,194,078617,433
Events in quadrant B5,309,776658,838
Events in quadrant C3,456,714624,930
Events in quadrant D11,152,576441,305

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204961
B0204861
C0156311
D0379711

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70226268.914839%
B70226909.826260%
C70231452.064645%
D7023212730.286202%

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 7622 7023 370 370 4.85% 5.27%
B 7622 7023 346 346 4.54% 4.93%
C 7623 7024 53 53 0.70% 0.75%
D 7623 7023 1685 1685 22.10% 23.99%

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 12 114 1564332 8548.3 740 719 182.9
A 10 253 243740 1328.6 740 719 182.9
A 4 249 130633 710.24 740 719 182.9
B 4 206 805858 5223.85 722 695 154.1
B 6 255 663707 4301.59 722 695 154.1
B 0 156 193528 1251.09 722 695 154.1
C 6 223 176268 869.49 734 726 201.9
C 15 254 106158 522.22 734 726 201.9
C 5 63 77479 380.17 734 726 201.9
D 12 110 4894926 25978.63 665 637 188.4
D 2 120 2210633 11730.54 665 637 188.4
D 8 160 618460 3279.37 665 637 188.4

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