ASTROSAT CZTI

Data Quality Report

Orbit 22337

Creation date: 2024-06-27T18:39:39.418811
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_147T01_9000003306_22337cztM0_level2.evt modeM0/AS1T03_147T01_9000003306_22337cztM0_level2_quad_clean.evt
Size (bytes)443,508,480100,327,680
Size423.0 MB 95.7 MB
Events in quadrant A3,211,536645,848
Events in quadrant B3,288,619662,245
Events in quadrant C3,330,837633,142
Events in quadrant D3,137,775622,762

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138542
B0139852
C0139753
D0138892

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6809270.396534%
B6809510.749009%
C6808871.277908%
D6808200.293772%

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 7624 6810 0 0 0.00% 0.00%
B 7624 6810 4 4 0.05% 0.06%
C 7623 6809 0 0 0.00% 0.00%
D 7623 6809 1 1 0.01% 0.01%

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 9265 51.05 832 815 165.5
A 0 226 7154 38.3 832 815 165.5
A 3 137 7070 37.79 832 815 165.5
B 4 173 31001 190.95 833 812 158.1
B 12 111 19376 117.42 833 812 158.1
B 11 111 16973 102.22 833 812 158.1
C 14 238 129738 674.31 816 820 191.2
C 0 10 9774 46.83 816 820 191.2
C 9 54 7346 34.13 816 820 191.2
D 2 234 26813 130.18 823 798 199.8
D 13 174 9497 43.53 823 798 199.8
D 14 226 8181 36.95 823 798 199.8

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