ASTROSAT CZTI

Data Quality Report

Orbit 56352

Creation date: 2026-02-26T21:40:03.753098
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_083T05_9000006554_56352cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56352cztM0_level2_quad_clean.evt
Size (bytes)787,631,04097,657,920
Size751.1 MB 93.1 MB
Events in quadrant A6,023,380665,162
Events in quadrant B4,270,193745,587
Events in quadrant C8,349,813572,004
Events in quadrant D9,938,393457,599

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230580
B0177500
C0299530
D0347654

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74174806.471619%
B74171492.008898%
C7417136218.363220%
D7416226330.515102%

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 7417 7417 456 456 6.15% 6.15%
B 7417 7417 81 81 1.09% 1.09%
C 7417 7417 1265 1265 17.06% 17.06%
D 7415 7415 1671 1671 22.54% 22.54%

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 4 249 526791 2709.55 771 751 194.1
A 0 8 502964 2586.82 771 751 194.1
A 7 64 310383 1594.87 771 751 194.1
B 4 206 359021 2153.22 780 750 166.4
B 5 185 295777 1773.12 780 750 166.4
B 10 247 108754 649.11 780 750 166.4
C 12 254 3545246 18078.32 708 702 196.1
C 12 252 657526 3350.01 708 702 196.1
C 15 230 376819 1918.32 708 702 196.1
D 8 129 3429550 19326.88 616 587 177.4
D 2 62 1935754 10907.3 616 587 177.4
D 6 239 714030 4021.22 616 587 177.4

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