ASTROSAT CZTI

Data Quality Report

Orbit 53270

Creation date: 2025-08-04T10:40:45.905266
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/AS1C09_011T08_9000006492_53270cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53270cztM0_level2_quad_clean.evt
Size (bytes)694,546,56095,212,800
Size662.4 MB 90.8 MB
Events in quadrant A4,508,088660,341
Events in quadrant B5,923,050678,500
Events in quadrant C10,303,255465,976
Events in quadrant D4,419,697578,216

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185351
B0226281
C0356691
D0185601

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71711892.635616%
B71716038.408869%
C7171231232.240971%
D71724446.190742%

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 7781 7171 147 147 1.89% 2.05%
B 7781 7172 417 417 5.36% 5.81%
C 7781 7172 2168 2168 27.86% 30.23%
D 7782 7173 388 388 4.99% 5.41%

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 62 704949 3935.1 724 706 179.0
A 3 27 502003 2801.1 724 706 179.0
A 12 80 89234 494.67 724 706 179.0
B 10 254 1380039 9122.24 709 685 151.2
B 2 249 629541 4158.88 709 685 151.2
B 4 81 522995 3454.25 709 685 151.2
C 10 22 2911227 16942.98 621 617 171.8
C 13 3 2077315 12088.69 621 617 171.8
C 15 224 1190915 6928.86 621 617 171.8
D 12 3 1026846 5264.36 675 643 194.9
D 1 0 121147 618.18 675 643 194.9
D 3 12 101527 517.53 675 643 194.9

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