ASTROSAT CZTI

Data Quality Report

Orbit 56288

Creation date: 2026-02-22T19:18:41.298941
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_049T01_9000006552_56288cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56288cztM0_level2_quad_clean.evt
Size (bytes)739,100,16082,517,760
Size704.9 MB 78.7 MB
Events in quadrant A12,382,243300,189
Events in quadrant B3,652,222671,418
Events in quadrant C5,851,986564,601
Events in quadrant D4,981,583519,925

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0411281
B0150661
C0217161
D0191651

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6338364457.494478%
B63382163.408015%
C633867110.586936%
D63386129.656043%

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 7483 6338 3513 3513 46.95% 55.43%
B 7483 6338 77 77 1.03% 1.21%
C 7483 6338 540 540 7.22% 8.52%
D 7483 6338 602 602 8.04% 9.50%

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 8 176 4368330 30945.58 564 551 141.1
A 15 32 2502642 17727.24 564 551 141.1
A 4 95 2282265 16165.87 564 551 141.1
B 4 206 235512 1606.24 691 669 146.2
B 5 185 203950 1390.37 691 669 146.2
B 8 128 135495 922.16 691 669 146.2
C 12 254 1277085 7050.52 664 658 181.0
C 5 250 1092637 6031.69 664 658 181.0
C 12 252 331145 1825.49 664 658 181.0
D 12 31 839099 4509.67 658 627 185.9
D 5 32 786569 4227.14 658 627 185.9
D 2 249 250569 1344.3 658 627 185.9

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