ASTROSAT CZTI

Data Quality Report

Orbit 30167

Creation date: 2024-06-27T20:11:43.994340
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/AS1A10_097T03_9000004336_30167cztM0_level2.evt modeM0/AS1A10_097T03_9000004336_30167cztM0_level2_quad_clean.evt
Size (bytes)645,071,040101,825,280
Size615.2 MB 97.1 MB
Events in quadrant A3,244,092669,396
Events in quadrant B5,114,961676,513
Events in quadrant C6,762,864638,868
Events in quadrant D3,985,291655,748

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134222
B0195332
C0247192
D0159572

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6354540.849858%
B63541201.888574%
C635484213.251495%
D63541191.872836%

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 7589 6355 1 1 0.01% 0.02%
B 7589 6355 0 0 0.00% 0.00%
C 7589 6355 260 260 3.43% 4.09%
D 7589 6355 90 90 1.19% 1.42%

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 8 192 22432 129.68 835 819 166.7
A 13 254 12203 68.31 835 819 166.7
A 3 137 7541 40.33 835 819 166.7
B 6 159 1822391 11609.8 827 806 156.9
B 0 190 27027 167.12 827 806 156.9
B 0 230 22878 140.68 827 806 156.9
C 3 233 3508142 18838.99 799 807 186.2
C 14 238 127112 678.42 799 807 186.2
C 2 114 14372 72.86 799 807 186.2
D 11 176 267376 1354.34 825 809 196.8
D 8 195 256170 1297.41 825 809 196.8
D 10 199 107546 542.29 825 809 196.8

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