ASTROSAT CZTI

Data Quality Report

Orbit 53272

Creation date: 2025-08-03T15:12:10.806092
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_53272cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53272cztM0_level2_quad_clean.evt
Size (bytes)854,061,12092,099,520
Size814.5 MB 87.8 MB
Events in quadrant A7,327,837597,619
Events in quadrant B7,619,579649,454
Events in quadrant C11,398,476429,869
Events in quadrant D4,706,604604,574

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270110
B0275930
C0388280
D0192330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7276106014.568444%
B7277100613.824378%
C7277271737.336815%
D72772102.885805%

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 7276 7276 1002 1002 13.77% 13.77%
B 7277 7277 922 922 12.67% 12.67%
C 7276 7276 2696 2696 37.05% 37.05%
D 7277 7277 230 230 3.16% 3.16%

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 27 3556357 20047.4 712 695 177.4
A 3 62 312352 1757.17 712 695 177.4
A 15 174 132261 741.79 712 695 177.4
B 10 254 2845767 18784.65 712 689 151.5
B 4 81 885321 5840.79 712 689 151.5
B 2 249 537076 3541.5 712 689 151.5
C 1 241 3789106 22776.62 601 593 166.3
C 15 224 2482220 14919.59 601 593 166.3
C 10 22 895120 5377.91 601 593 166.3
D 12 3 635688 3130.47 713 681 202.8
D 2 37 358487 1763.92 713 681 202.8
D 1 0 253083 1244.3 713 681 202.8

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