ASTROSAT CZTI

Data Quality Report

Orbit 54355

Creation date: 2025-10-15T11:33:52.352860
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_126T15_9000006516_54355cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54355cztM0_level2_quad_clean.evt
Size (bytes)576,984,96082,215,360
Size550.3 MB 78.4 MB
Events in quadrant A2,859,150609,342
Events in quadrant B2,980,128652,552
Events in quadrant C3,402,063572,920
Events in quadrant D11,629,807218,677

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132481
B0134061
C0147871
D0388791

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6251270.431931%
B6251600.959846%
C62521231.967370%
D6252389162.236084%

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 7395 6251 13 13 0.18% 0.21%
B 7396 6252 31 31 0.42% 0.50%
C 7397 6253 141 141 1.91% 2.25%
D 7396 6251 3589 3589 48.53% 57.41%

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 3 110 139763 864.38 653 640 161.0
A 7 206 111275 687.38 653 640 161.0
A 4 3 17196 102.86 653 640 161.0
B 0 213 107822 770.08 650 628 139.2
B 10 247 85998 613.29 650 628 139.2
B 0 171 73044 520.23 650 628 139.2
C 12 252 421800 2436.07 628 620 172.9
C 15 147 169498 976.78 628 620 172.9
C 14 254 155982 898.6 628 620 172.9
D 8 176 9425746 91207.12 359 341 103.3
D 12 3 315823 3052.83 359 341 103.3
D 15 108 211928 2047.47 359 341 103.3

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