ASTROSAT CZTI

Data Quality Report

Orbit 22908

Creation date: 2024-06-27T18:47:20.108095
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/AS1A08_009T01_9000003382_22908cztM0_level2.evt modeM0/AS1A08_009T01_9000003382_22908cztM0_level2_quad_clean.evt
Size (bytes)465,609,60097,804,800
Size444.0 MB 93.3 MB
Events in quadrant A3,129,997630,653
Events in quadrant B3,227,477639,875
Events in quadrant C3,190,540618,055
Events in quadrant D4,095,361604,166

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137833
B0140442
C0139682
D0171352

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6728380.564804%
B6728440.653983%
C6728921.367420%
D67282153.195600%

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 7663 6728 0 0 0.00% 0.00%
B 7663 6728 1 1 0.01% 0.01%
C 7663 6729 2 2 0.03% 0.03%
D 7663 6729 123 123 1.61% 1.83%

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 13 170 19260 113.93 806 788 162.1
A 13 254 11223 64.36 806 788 162.1
A 3 137 7234 39.76 806 788 162.1
B 12 111 19016 117.9 808 787 154.6
B 11 111 16646 102.57 808 787 154.6
B 0 190 14866 91.06 808 787 154.6
C 14 238 124012 668.63 783 787 184.3
C 7 247 12529 63.71 783 787 184.3
C 13 61 5325 24.62 783 787 184.3
D 1 52 570337 3010.24 781 758 189.2
D 12 233 257592 1357.38 781 758 189.2
D 13 174 172002 905.03 781 758 189.2

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