ASTROSAT CZTI

Data Quality Report

Orbit 31514

Creation date: 2024-06-27T20:29:21.341426
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_119T01_9000004590_31514cztM0_level2.evt modeM0/AS1A10_119T01_9000004590_31514cztM0_level2_quad_clean.evt
Size (bytes)613,811,52071,527,680
Size585.4 MB 68.2 MB
Events in quadrant A4,362,101435,552
Events in quadrant B5,888,502429,728
Events in quadrant C3,810,075427,505
Events in quadrant D4,079,843410,224

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171792
B0219942
C0151072
D0162312

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66372133.209281%
B66373425.152931%
C66371642.470996%
D66371201.808046%

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 7837 6638 121 121 1.54% 1.82%
B 7837 6638 130 130 1.66% 1.96%
C 7837 6637 23 23 0.29% 0.35%
D 7837 6638 100 100 1.28% 1.51%

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 0 13 1053902 6136.44 857 842 171.6
A 13 254 11697 63.25 857 842 171.6
A 3 137 8180 42.76 857 842 171.6
B 6 159 1808478 11211.08 849 829 161.2
B 5 172 450736 2790.33 849 829 161.2
B 4 80 200847 1240.52 849 829 161.2
C 0 10 177484 915.79 831 838 192.9
C 3 233 145012 747.45 831 838 192.9
C 14 238 134498 692.94 831 838 192.9
D 8 195 288493 1451.55 830 808 198.2
D 12 79 241658 1215.24 830 808 198.2
D 12 233 238066 1197.11 830 808 198.2

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