ASTROSAT CZTI

Data Quality Report

Orbit 11501

Creation date: 2024-06-27T16:13:52.030762
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/AS1A04_021T05_9000001686_11501cztM0_level2.evt modeM0/AS1A04_021T05_9000001686_11501cztM0_level2_quad_clean.evt
Size (bytes)705,147,84075,847,680
Size672.5 MB 72.3 MB
Events in quadrant A6,372,211420,099
Events in quadrant B7,300,793439,251
Events in quadrant C3,327,393478,026
Events in quadrant D3,859,303448,692

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0238913
B0264912
C0149292
D0164412

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A732481311.100492%
B7324130917.872747%
C7324510.696341%
D7324991.351720%

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 8860 7327 461 461 5.20% 6.29%
B 8860 7327 920 920 10.38% 12.56%
C 8860 7327 0 0 0.00% 0.00%
D 8860 7327 49 49 0.55% 0.67%

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 8 5 3037624 17915.06 821 802 169.5
A 1 162 50032 290.42 821 802 169.5
A 9 143 25243 144.18 821 802 169.5
B 4 81 2860928 18519.02 806 784 154.4
B 4 239 811512 5249.35 806 784 154.4
B 3 64 362323 2340.91 806 784 154.4
C 12 4 16155 77.28 849 854 198.0
C 13 61 6269 27.35 849 854 198.0
C 3 202 2017 5.87 849 854 198.0
D 6 219 221281 1097.48 836 813 200.9
D 1 52 172593 855.11 836 813 200.9
D 2 120 76222 375.38 836 813 200.9

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