ASTROSAT CZTI

Data Quality Report

Orbit 53125

Creation date: 2025-07-28T20:31:31.136868
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/AS1A13_003T01_9000006486_53125cztM0_level2.fits modeM0/AS1A13_003T01_9000006486_53125cztM0_level2_quad_clean.evt
Size (bytes)1,063,788,48076,187,520
Size1014.5 MB 72.7 MB
Events in quadrant A15,619,072139,101
Events in quadrant B6,986,542628,416
Events in quadrant C8,414,764561,431
Events in quadrant D7,807,853481,029

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0512521
B0257521
C0300451
D0282231

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7120591183.019663%
B7120113015.870787%
C7120113615.955056%
D7121179125.150962%

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 7180 7121 4945 4945 68.87% 69.44%
B 7180 7121 776 776 10.81% 10.90%
C 7180 7121 997 997 13.89% 14.00%
D 7181 7122 1335 1335 18.59% 18.74%

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 9 191 13514358 129534.04 415 403 104.3
A 3 62 183580 1755.78 415 403 104.3
A 0 8 118604 1132.98 415 403 104.3
B 10 254 3619108 23199.14 729 704 156.0
B 0 197 170951 1091.53 729 704 156.0
B 4 81 57786 365.98 729 704 156.0
C 0 240 2059530 10757.81 695 687 191.4
C 9 38 1380243 7208.42 695 687 191.4
C 15 224 1149423 6002.34 695 687 191.4
D 12 3 3955227 21375.55 648 617 185.0
D 2 120 328337 1771.4 648 617 185.0
D 8 176 163585 880.88 648 617 185.0

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