ASTROSAT CZTI

Data Quality Report

Orbit 10907

Creation date: 2024-06-27T16:05:29.029300
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_055T02_9000001576_10907cztM0_level2.evt modeM0/AS1A04_055T02_9000001576_10907cztM0_level2_quad_clean.evt
Size (bytes)1,498,190,400200,756,160
Size1.4 GB 191.5 MB
Events in quadrant A13,488,0811,191,244
Events in quadrant B12,277,1091,239,021
Events in quadrant C7,867,2611,253,810
Events in quadrant D10,529,1051,157,697

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03660
B03660
C03660
D03660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0519824
B0482503
C0363623
D0439013

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1795111876.612445%
B1795110645.927246%
C17951510.284107%
D179517324.077767%

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 19906 17954 866 866 4.35% 4.82%
B 19906 17954 614 614 3.08% 3.42%
C 19906 17954 1 1 0.01% 0.01%
D 19906 17954 544 544 2.73% 3.03%

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 8 5 3320703 8122.89 2017 1970 408.6
A 13 251 1843629 4507.62 2017 1970 408.6
A 15 223 196024 474.96 2017 1970 408.6
B 4 239 3859500 9875.18 2053 2002 390.6
B 0 214 93673 234.68 2053 2002 390.6
B 0 219 85347 213.36 2053 2002 390.6
C 13 61 14759 27.34 2010 2021 465.9
C 14 128 13907 25.51 2010 2021 465.9
C 4 222 9054 15.1 2010 2021 465.9
D 12 33 2193790 4615.03 1965 1911 474.9
D 5 222 142741 296.52 1965 1911 474.9
D 1 52 125363 259.93 1965 1911 474.9

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