ASTROSAT CZTI

Data Quality Report

Orbit 52632

Creation date: 2025-06-23T19:30:23.568569
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_011T06_9000006478_52632cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52632cztM0_level2_quad_clean.evt
Size (bytes)877,141,44086,031,360
Size836.5 MB 82.0 MB
Events in quadrant A3,666,617644,720
Events in quadrant B4,541,817687,085
Events in quadrant C14,098,708326,152
Events in quadrant D9,614,596453,330

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161990
B0186430
C0466970
D0335752

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70811021.440475%
B70811662.344302%
C7081378753.481147%
D7080178125.155367%

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 7081 7081 74 74 1.05% 1.05%
B 7081 7081 90 90 1.27% 1.27%
C 7081 7081 3614 3614 51.04% 51.04%
D 7079 7079 1732 1732 24.47% 24.47%

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 4 249 368245 2060.47 716 697 178.4
A 15 174 135927 758.1 716 697 178.4
A 3 46 52743 291.77 716 697 178.4
B 10 254 650308 4269.07 711 688 152.2
B 8 234 266097 1744.17 711 688 152.2
B 4 81 224120 1468.31 711 688 152.2
C 15 248 11126022 76352.24 530 525 145.7
C 15 147 329439 2257.28 530 525 145.7
C 13 3 230324 1577.07 530 525 145.7
D 6 42 3948994 21956.03 622 591 179.8
D 8 176 1157638 6434.03 622 591 179.8
D 12 17 768324 4269.16 622 591 179.8

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