ASTROSAT CZTI

Data Quality Report

Orbit 28673

Creation date: 2024-06-27T19:54:45.613849
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/AS1A10_110T03_9000004114_28673cztM0_level2.evt modeM0/AS1A10_110T03_9000004114_28673cztM0_level2_quad_clean.evt
Size (bytes)498,879,36084,432,960
Size475.8 MB 80.5 MB
Events in quadrant A3,018,231552,447
Events in quadrant B3,379,457555,912
Events in quadrant C3,089,384535,029
Events in quadrant D5,233,350512,970

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122591
B0133291
C0124531
D0195041

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5728460.803073%
B57281723.002793%
C57271172.042954%
D57284437.733939%

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 6978 5728 1 1 0.01% 0.02%
B 6978 5728 82 82 1.18% 1.43%
C 6977 5727 0 0 0.00% 0.00%
D 6978 5728 369 369 5.29% 6.44%

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 15 174 11461 69.9 779 766 153.0
A 13 254 9971 60.16 779 766 153.0
A 3 137 7044 41.03 779 766 153.0
B 10 245 381466 2666.98 760 742 142.8
B 12 111 17033 114.12 760 742 142.8
B 11 111 15247 101.61 760 742 142.8
C 14 238 138777 800.53 742 750 172.4
C 14 254 26906 151.7 742 750 172.4
C 3 233 14527 79.9 742 750 172.4
D 1 52 2008746 11529.78 739 722 174.2
D 8 195 363580 2083.48 739 722 174.2
D 2 120 28382 158.82 739 722 174.2

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