ASTROSAT CZTI

Data Quality Report

Orbit 53941

Creation date: 2025-09-18T11:04:23.644170
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_057T04_9000006508_53941cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53941cztM0_level2_quad_clean.evt
Size (bytes)847,517,76094,092,480
Size808.3 MB 89.7 MB
Events in quadrant A4,350,467728,977
Events in quadrant B4,359,227768,045
Events in quadrant C5,618,872633,463
Events in quadrant D16,437,717175,678

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183100
B0183400
C02239710
D0543008

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78061031.319498%
B78072312.958883%
C780478310.033316%
D7806586875.172944%

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 7806 7806 73 73 0.94% 0.94%
B 7807 7807 181 181 2.32% 2.32%
C 7807 7806 771 771 9.88% 9.88%
D 7806 7806 4858 4858 62.23% 62.23%

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 14 235 328988 1578.55 846 825 207.9
A 15 174 275611 1321.8 846 825 207.9
A 4 249 81357 387.38 846 825 207.9
B 5 172 305015 1695.72 832 803 179.4
B 0 213 244605 1358.99 832 803 179.4
B 5 185 162849 903.27 832 803 179.4
C 1 241 2154375 10158.06 777 771 212.0
C 12 2 88295 412.83 777 771 212.0
C 15 174 45122 209.19 777 771 212.0
D 8 176 13618165 136581.65 345 329 99.7
D 10 172 805078 8071.32 345 329 99.7
D 6 239 141560 1416.49 345 329 99.7

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