ASTROSAT CZTI

Data Quality Report

Orbit 37161

Creation date: 2024-06-27T21:36:22.620845
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_37161cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37161cztM0_level2_quad_clean.evt
Size (bytes)440,899,20082,912,320
Size420.5 MB 79.1 MB
Events in quadrant A2,651,805552,115
Events in quadrant B2,971,618549,557
Events in quadrant C3,283,497540,982
Events in quadrant D4,097,697508,656

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110843
B0122142
C0129752
D0155692

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5124140.273224%
B5124841.639344%
C51241392.712724%
D51242384.644809%

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 7127 5125 13 13 0.18% 0.25%
B 7127 5125 35 35 0.49% 0.68%
C 7127 5125 85 85 1.19% 1.66%
D 7127 5125 217 217 3.04% 4.23%

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 253946 2094.89 604 594 120.9
A 9 143 35703 290.31 604 594 120.9
A 13 6 16862 134.51 604 594 120.9
B 0 190 207509 1817.89 594 578 113.8
B 5 184 194956 1707.61 594 578 113.8
B 5 172 182079 1594.49 594 578 113.8
C 14 254 563488 4123.47 581 587 136.5
C 0 10 231460 1691.24 581 587 136.5
C 15 214 214174 1564.61 581 587 136.5
D 2 249 691493 4935.09 581 566 140.0
D 2 153 347997 2481.6 581 566 140.0
D 12 17 201570 1435.71 581 566 140.0

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