ASTROSAT CZTI

Data Quality Report

Orbit 55406

Creation date: 2025-12-25T11:41:38.289923
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_099T01_9000006536_55406cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55406cztM0_level2_quad_clean.evt
Size (bytes)723,761,28095,397,120
Size690.2 MB 91.0 MB
Events in quadrant A3,318,897722,637
Events in quadrant B3,931,199751,531
Events in quadrant C3,599,572679,762
Events in quadrant D15,354,519209,296

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157393
B0174458
C0166392
D05081032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7553370.489872%
B75502313.059603%
C7554700.926661%
D7548517268.521463%

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 7699 7556 3 3 0.04% 0.04%
B 7699 7554 104 104 1.35% 1.38%
C 7699 7556 23 23 0.30% 0.30%
D 7698 7554 4780 4780 62.09% 63.28%

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 3 56081 278.97 799 779 198.2
A 4 159 51623 256.48 799 779 198.2
A 0 8 22304 108.58 799 779 198.2
B 5 172 568830 3427.4 781 752 165.7
B 10 247 115779 693.99 781 752 165.7
B 5 185 49515 294.2 781 752 165.7
C 1 241 408864 1909.69 783 774 213.7
C 13 3 51339 236.62 783 774 213.7
C 12 252 51301 236.44 783 774 213.7
D 11 129 13250596 122173.56 376 359 108.5
D 2 249 225045 2071.71 376 359 108.5
D 8 160 110151 1012.34 376 359 108.5

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