ASTROSAT CZTI

Data Quality Report

Orbit 55630

Creation date: 2026-01-09T21:34:37.290627
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_021T06_9000006538_55630cztM0_level2.fits modeM0/AS1A14_021T06_9000006538_55630cztM0_level2_quad_clean.evt
Size (bytes)447,272,64098,832,960
Size426.6 MB 94.3 MB
Events in quadrant A4,733,749624,482
Events in quadrant B3,632,747687,717
Events in quadrant C3,524,718613,927
Events in quadrant D4,118,694577,016

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190292
B0161632
C0159562
D0174492

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70283134.453614%
B70291592.262057%
C70291081.536492%
D70291652.347418%

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 8558 7029 302 302 3.53% 4.30%
B 8559 7030 73 73 0.85% 1.04%
C 8559 7031 120 120 1.40% 1.71%
D 8559 7030 147 147 1.72% 2.09%

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 1243184 7079.67 708 691 175.5
A 15 32 394400 2243.33 708 691 175.5
A 8 249 217389 1234.73 708 691 175.5
B 5 185 474777 3128.92 710 684 151.5
B 1 159 190632 1253.62 710 684 151.5
B 9 251 62683 409.18 710 684 151.5
C 6 223 357269 1846.87 701 694 193.1
C 12 2 190674 984.0 701 694 193.1
C 15 178 76015 390.12 701 694 193.1
D 11 129 1194270 5993.15 695 663 199.2
D 5 173 53710 266.35 695 663 199.2
D 15 91 32934 162.03 695 663 199.2

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