ASTROSAT CZTI

Data Quality Report

Orbit 30668

Creation date: 2024-06-27T20:18:22.900220
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_094T79_9000004422_30668cztM0_level2.evt modeM0/AS1A10_094T79_9000004422_30668cztM0_level2_quad_clean.evt
Size (bytes)692,084,160133,171,200
Size660.0 MB 127.0 MB
Events in quadrant A3,473,664926,397
Events in quadrant B5,164,989927,700
Events in quadrant C3,446,157896,099
Events in quadrant D8,424,252817,379

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146052
B0201842
C0143502
D0295773

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66771061.587539%
B66781081.617251%
C66781452.171309%
D6677106515.950277%

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 8607 6677 28 28 0.33% 0.42%
B 8608 6678 4 4 0.05% 0.06%
C 8608 6678 0 0 0.00% 0.00%
D 8607 6679 1024 1024 11.90% 15.33%

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 0 13 213753 1273.61 832 815 167.2
A 12 96 30531 177.74 832 815 167.2
A 8 192 20477 117.6 832 815 167.2
B 6 159 1881705 12211.97 826 805 154.0
B 0 190 19114 118.87 826 805 154.0
B 12 111 18952 117.82 826 805 154.0
C 14 238 131738 700.24 806 812 187.0
C 3 233 87686 464.64 806 812 187.0
C 0 10 64017 338.05 806 812 187.0
D 8 195 3312601 18207.38 779 758 181.9
D 12 227 1915011 10523.91 779 758 181.9
D 12 218 85067 463.5 779 758 181.9

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