ASTROSAT CZTI

Data Quality Report

Orbit 32369

Creation date: 2024-06-27T20:39:26.513015
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/AS1A09_131T01_9000004702_32369cztM0_level2.evt modeM0/AS1A09_131T01_9000004702_32369cztM0_level2_quad_clean.evt
Size (bytes)725,267,520131,627,520
Size691.7 MB 125.5 MB
Events in quadrant A3,168,331911,875
Events in quadrant B5,870,167902,031
Events in quadrant C5,720,853865,797
Events in quadrant D6,746,174832,058

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139853
B0224952
C0217052
D0247752

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6809190.279042%
B68093314.861213%
C680969710.236452%
D68096509.546189%

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 7649 6810 0 0 0.00% 0.00%
B 7649 6810 132 132 1.73% 1.94%
C 7649 6810 377 377 4.93% 5.54%
D 7649 6810 465 465 6.08% 6.83%

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 6 15452 90.29 813 798 162.3
A 13 254 13782 80.0 813 798 162.3
A 3 137 8018 44.48 813 798 162.3
B 6 159 1993835 13161.64 802 781 151.4
B 5 172 225577 1484.5 802 781 151.4
B 0 155 178103 1170.99 802 781 151.4
C 3 233 1841953 10417.64 766 771 176.7
C 0 10 635333 3590.43 766 771 176.7
C 14 238 136768 769.49 766 771 176.7
D 8 195 1780801 9847.27 765 744 180.8
D 12 1 549283 3034.52 765 744 180.8
D 12 3 361504 1995.72 765 744 180.8

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