ASTROSAT CZTI

Data Quality Report

Orbit 47375

Creation date: 2024-07-02T07:31:30.118117
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_093T25_9000006324_47375cztM0_level2.fits modeM0/AS1A13_093T25_9000006324_47375cztM0_level2_quad_clean.evt
Size (bytes)512,968,320108,596,160
Size489.2 MB 103.6 MB
Events in quadrant A6,788,529719,731
Events in quadrant B3,230,890764,956
Events in quadrant C3,524,975708,045
Events in quadrant D4,930,625634,390

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0244822
B0139812
C0151582
D0193502

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66213004.531038%
B6621871.314001%
C66211852.794140%
D66213465.225797%

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 7671 6622 87 87 1.13% 1.31%
B 7671 6622 2 2 0.03% 0.03%
C 7671 6622 112 112 1.46% 1.69%
D 7671 6622 367 367 4.78% 5.54%

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 10 83 3674980 23298.0 756 739 157.7
A 9 191 182448 1152.2 756 739 157.7
A 13 254 9193 53.61 756 739 157.7
B 0 190 72692 474.16 767 743 151.7
B 0 218 27834 178.54 767 743 151.7
B 0 198 21048 133.82 767 743 151.7
C 0 207 601169 3425.33 741 746 175.3
C 3 233 25203 139.52 741 746 175.3
C 13 61 4841 23.36 741 746 175.3
D 2 165 1422391 7518.08 736 711 189.1
D 12 2 455586 2405.46 736 711 189.1
D 11 224 152233 801.27 736 711 189.1

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