ASTROSAT CZTI

Data Quality Report

Orbit 55391

Creation date: 2025-12-24T04:54:33.367920
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_009T01_9000006534_55391cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55391cztM0_level2_quad_clean.evt
Size (bytes)432,993,600108,374,400
Size412.9 MB 103.4 MB
Events in quadrant A3,668,269706,282
Events in quadrant B3,398,473758,573
Events in quadrant C3,557,426678,344
Events in quadrant D4,829,309624,856

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164432
B0157702
C0160212
D0197972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73851051.421801%
B7386911.232061%
C7386540.731113%
D73863364.549147%

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 8795 7387 59 59 0.67% 0.80%
B 8796 7388 23 23 0.26% 0.31%
C 8796 7388 31 31 0.35% 0.42%
D 8795 7387 290 290 3.30% 3.93%

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 0 8 270699 1370.36 795 773 197.0
A 4 159 165413 835.84 795 773 197.0
A 4 3 34611 171.79 795 773 197.0
B 10 247 118748 704.59 788 760 167.5
B 5 185 60297 355.54 788 760 167.5
B 0 199 37518 219.51 788 760 167.5
C 9 38 300418 1388.76 784 775 215.8
C 12 249 109707 504.87 784 775 215.8
C 12 250 48770 222.44 784 775 215.8
D 11 129 1211387 5507.48 772 738 219.8
D 2 249 224478 1017.84 772 738 219.8
D 7 70 115201 520.71 772 738 219.8

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