ASTROSAT CZTI

Data Quality Report

Orbit 24435

Creation date: 2024-06-27T19:05:59.710578
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/AS1T03_183T01_9000003606_24435cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24435cztM0_level2_quad_clean.evt
Size (bytes)498,297,600115,801,920
Size475.2 MB 110.4 MB
Events in quadrant A3,084,437772,949
Events in quadrant B3,298,522801,607
Events in quadrant C3,158,808757,548
Events in quadrant D5,099,464712,963

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136052
B0140712
C0135772
D0197852

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6631100.150807%
B6631370.557985%
C6631480.723873%
D66311362.050973%

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 7806 6632 2 2 0.03% 0.03%
B 7806 6632 7 7 0.09% 0.11%
C 7806 6632 0 0 0.00% 0.00%
D 7806 6632 80 80 1.02% 1.21%

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 2 19074 114.43 795 780 159.9
A 13 254 11434 66.64 795 780 159.9
A 3 137 7065 39.31 795 780 159.9
B 3 64 79431 521.91 808 788 150.7
B 4 200 38582 250.82 808 788 150.7
B 12 111 17868 113.35 808 788 150.7
C 14 238 126454 699.65 776 781 179.6
C 3 233 5907 28.54 776 781 179.6
C 13 61 5504 26.29 776 781 179.6
D 8 195 1747147 9422.66 767 745 185.3
D 12 218 148232 795.76 767 745 185.3
D 1 52 141056 757.04 767 745 185.3

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