ASTROSAT CZTI

Data Quality Report

Orbit 58530

Creation date: 2026-07-23T11:48:39.821938
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_044T04_9000006592_58530cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58530cztM0_level2_quad_clean.evt
Size (bytes)593,496,00092,237,760
Size566.0 MB 88.0 MB
Events in quadrant A3,487,439620,126
Events in quadrant B3,794,495668,841
Events in quadrant C8,422,900480,447
Events in quadrant D5,722,774537,048

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155102
B0160662
C0299412
D0220342

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69781412.020636%
B69781762.522213%
C6978181826.053310%
D69785437.781599%

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 7853 7174 46 46 0.59% 0.64%
B 7853 7173 39 39 0.50% 0.54%
C 7852 7172 1586 1586 20.20% 22.11%
D 7853 7174 508 508 6.47% 7.08%

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 10 17 273021 1418.53 780 759 191.9
A 10 251 56994 292.99 780 759 191.9
A 11 31 44833 229.63 780 759 191.9
B 8 234 262583 1561.75 776 748 167.7
B 4 171 149602 887.86 776 748 167.7
B 0 171 99301 587.83 776 748 167.7
C 5 10 4042982 21588.45 673 664 187.2
C 4 5 947102 5054.56 673 664 187.2
C 12 252 483564 2578.98 673 664 187.2
D 3 12 1561131 7486.26 732 701 208.4
D 2 249 598972 2870.24 732 701 208.4
D 2 31 384751 1842.5 732 701 208.4

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