ASTROSAT CZTI

Data Quality Report

Orbit 15295

Creation date: 2024-06-27T17:06:22.610217
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/AS1A04_223T01_9000002258_15295cztM0_level2.evt modeM0/AS1A04_223T01_9000002258_15295cztM0_level2_quad_clean.evt
Size (bytes)484,228,80090,613,440
Size461.8 MB 86.4 MB
Events in quadrant A3,299,326579,819
Events in quadrant B3,905,040586,069
Events in quadrant C3,837,813569,279
Events in quadrant D3,176,028550,233

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139953
B0157132
C0156912
D0137922

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65841211.837789%
B65842573.903402%
C65841101.670717%
D65841071.625152%

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 8570 6585 2 2 0.02% 0.03%
B 8570 6586 63 63 0.74% 0.96%
C 8570 6586 9 9 0.11% 0.14%
D 8570 6585 2 2 0.02% 0.03%

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 9 143 33719 190.99 849 831 172.2
A 0 226 7487 38.65 849 831 172.2
A 12 194 6390 32.28 849 831 172.2
B 10 16 484348 3023.92 835 815 159.9
B 3 64 66404 410.18 835 815 159.9
B 0 205 28984 176.16 835 815 159.9
C 3 233 470257 2486.65 814 817 188.8
C 3 9 186222 982.1 814 817 188.8
C 7 247 6724 31.29 814 817 188.8
D 2 234 24522 118.47 822 798 200.3
D 7 38 19153 91.66 822 798 200.3
D 10 70 13500 63.43 822 798 200.3

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