ASTROSAT CZTI

Data Quality Report

Orbit 17338

Creation date: 2024-06-27T17:35:09.334659
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/AS1A05_169T01_9000002558_17338cztM0_level2.evt modeM0/AS1A05_169T01_9000002558_17338cztM0_level2_quad_clean.evt
Size (bytes)501,672,96068,970,240
Size478.4 MB 65.8 MB
Events in quadrant A3,272,136428,136
Events in quadrant B3,340,988429,968
Events in quadrant C3,358,269406,698
Events in quadrant D4,789,970379,495

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139163
B0140712
C0142322
D0184512

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6364681.068510%
B6364871.367065%
C63641221.917033%
D63644817.558140%

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 7569 6364 0 0 0.00% 0.00%
B 7569 6365 0 0 0.00% 0.00%
C 7569 6365 0 0 0.00% 0.00%
D 7569 6364 366 366 4.84% 5.75%

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 0 226 7494 39.41 851 838 168.9
A 12 194 6073 30.99 851 838 168.9
A 3 137 6066 30.95 851 838 168.9
B 12 111 18958 113.81 846 827 159.3
B 11 111 16565 98.79 846 827 159.3
B 5 207 16461 98.14 846 827 159.3
C 14 238 128051 677.21 814 821 187.9
C 3 233 54165 283.93 814 821 187.9
C 13 61 5516 24.99 814 821 187.9
D 5 222 1668466 8630.39 800 777 193.2
D 2 152 68144 348.63 800 777 193.2
D 2 120 21506 107.27 800 777 193.2

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