ASTROSAT CZTI

Data Quality Report

Orbit 03690

Creation date: 2024-06-27T14:32:16.922548
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/AS1G05_152T04_9000000480_03690cztM0_level2.evt modeM0/AS1G05_152T04_9000000480_03690cztM0_level2_quad_clean.evt
Size (bytes)487,817,28076,671,360
Size465.2 MB 73.1 MB
Events in quadrant A3,649,050473,430
Events in quadrant B4,174,735475,185
Events in quadrant C3,137,861467,830
Events in quadrant D3,374,180455,415

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147993
B0172812
C0135142
D0143602

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64492313.581951%
B64491712.651574%
C64491071.659172%
D64491352.093348%

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 6449 73 73 0.95% 1.13%
B 7649 6449 13 13 0.17% 0.20%
C 7649 6450 4 4 0.05% 0.06%
D 7649 6449 22 22 0.29% 0.34%

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 13 251 354631 2115.43 823 805 167.3
A 0 50 51527 303.25 823 805 167.3
A 3 1 34187 199.58 823 805 167.3
B 14 167 491110 3102.18 828 810 158.0
B 15 204 191835 1208.64 828 810 158.0
B 3 0 179786 1132.4 828 810 158.0
C 2 53 47707 257.01 788 793 182.5
C 13 61 6684 32.27 788 793 182.5
C 12 4 5074 23.45 788 793 182.5
D 2 37 155781 814.28 794 770 190.4
D 5 233 59960 310.93 794 770 190.4
D 9 35 54180 280.56 794 770 190.4

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
Veto Counter