ASTROSAT CZTI

Data Quality Report

Orbit 24739

Creation date: 2024-06-27T19:09:20.256988
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_194T01_9000003620_24739cztM0_level2.evt modeM0/AS1T03_194T01_9000003620_24739cztM0_level2_quad_clean.evt
Size (bytes)489,156,48099,034,560
Size466.5 MB 94.4 MB
Events in quadrant A2,947,666677,128
Events in quadrant B3,049,050677,560
Events in quadrant C4,545,528623,648
Events in quadrant D3,885,421622,473

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119991
B0123411
C0176431
D0151931

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5707581.016296%
B5706851.489660%
C57071793.136499%
D57071873.276678%

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 6887 5707 0 0 0.00% 0.00%
B 6886 5706 16 16 0.23% 0.28%
C 6887 5707 0 0 0.00% 0.00%
D 6887 5707 181 181 2.63% 3.17%

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 13 254 8627 51.47 763 749 153.1
A 3 137 6770 39.34 763 749 153.1
A 0 226 6569 38.03 763 749 153.1
B 3 64 43875 302.82 742 725 142.5
B 6 36 34384 236.22 742 725 142.5
B 4 80 30214 206.95 742 725 142.5
C 7 247 1641197 9920.38 713 719 165.4
C 14 238 114390 687.39 713 719 165.4
C 7 226 5071 26.31 713 719 165.4
D 1 52 945887 5322.87 733 713 177.6
D 8 195 92923 519.29 733 713 177.6
D 13 104 33562 184.99 733 713 177.6

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