ASTROSAT CZTI

Data Quality Report

Orbit 08018

Creation date: 2024-06-27T15:26:55.352666
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/AS1G06_154T02_9000001102_08018cztM0_level2.evt modeM0/AS1G06_154T02_9000001102_08018cztM0_level2_quad_clean.evt
Size (bytes)425,448,000107,133,120
Size405.7 MB 102.2 MB
Events in quadrant A3,011,626689,657
Events in quadrant B3,170,378719,791
Events in quadrant C3,093,990719,088
Events in quadrant D3,189,149685,339

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130023
B0133792
C0132142
D0136002

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6171270.437530%
B6171520.842651%
C6171340.550964%
D6171520.842651%

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 7516 6172 0 0 0.00% 0.00%
B 7516 6172 3 3 0.04% 0.05%
C 7516 6172 0 0 0.00% 0.00%
D 7516 6172 31 31 0.41% 0.50%

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 0 226 7252 41.1 781 764 157.9
A 12 194 6484 36.23 781 764 157.9
A 13 254 3110 14.86 781 764 157.9
B 5 250 61296 402.06 795 776 150.5
B 5 255 27374 176.7 795 776 150.5
B 12 111 16206 102.51 795 776 150.5
C 12 4 11735 60.86 786 794 179.8
C 1 16 10828 55.81 786 794 179.8
C 13 61 5805 27.87 786 794 179.8
D 1 52 153099 826.2 774 756 184.4
D 2 136 55794 298.49 774 756 184.4
D 14 34 31841 168.58 774 756 184.4

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter