ASTROSAT CZTI

Data Quality Report

Orbit 37123

Creation date: 2024-06-27T21:35:52.143928
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/AS1A11_079T01_9000005284_37123cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37123cztM0_level2_quad_clean.evt
Size (bytes)411,511,68059,365,440
Size392.4 MB 56.6 MB
Events in quadrant A2,879,489350,094
Events in quadrant B2,974,369353,659
Events in quadrant C3,121,193349,602
Events in quadrant D3,092,089337,441

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121693
B0127282
C0128702
D0133232

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5809190.327079%
B5809751.291100%
C5809651.118953%
D58091001.721467%

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 7242 5810 4 4 0.06% 0.07%
B 7242 5810 37 37 0.51% 0.64%
C 7242 5810 66 66 0.91% 1.14%
D 7242 5810 96 96 1.33% 1.65%

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 273416 2037.89 658 644 133.8
A 15 237 24746 180.06 658 644 133.8
A 9 143 20455 148.01 658 644 133.8
B 5 200 194755 1529.77 653 634 126.9
B 5 184 65441 510.71 653 634 126.9
B 5 172 47275 367.55 653 634 126.9
C 14 254 283129 1868.19 640 644 151.2
C 15 214 250211 1650.49 640 644 151.2
C 0 10 77519 508.4 640 644 151.2
D 2 250 203234 1290.22 637 621 157.0
D 13 249 144734 917.7 637 621 157.0
D 12 17 135715 860.26 637 621 157.0

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