ASTROSAT CZTI

Data Quality Report

Orbit 03789

Creation date: 2024-06-27T14:33:41.265733
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_152T03_9000000488_03789cztM0_level2.evt modeM0/AS1G05_152T03_9000000488_03789cztM0_level2_quad_clean.evt
Size (bytes)531,135,36071,616,960
Size506.5 MB 68.3 MB
Events in quadrant A4,957,650414,838
Events in quadrant B3,816,989430,879
Events in quadrant C3,288,875424,181
Events in quadrant D3,547,386411,160

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191843
B0162112
C0145572
D0155972

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69944115.876466%
B6994771.100944%
C6994400.571919%
D6994771.100944%

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 9164 6996 300 300 3.27% 4.29%
B 9164 6995 32 32 0.35% 0.46%
C 9164 6996 9 9 0.10% 0.13%
D 9164 6996 59 59 0.64% 0.84%

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 1593745 9718.33 796 778 163.9
A 0 118 183155 1112.64 796 778 163.9
A 0 50 56832 341.97 796 778 163.9
B 15 204 358696 2245.02 831 809 159.4
B 0 173 53580 331.03 831 809 159.4
B 5 200 41169 253.18 831 809 159.4
C 2 53 85504 456.49 794 798 185.6
C 10 65 63841 339.74 794 798 185.6
C 1 16 30367 159.35 794 798 185.6
D 8 112 343239 1775.7 788 765 192.9
D 13 239 56233 287.6 788 765 192.9
D 2 14 43517 221.67 788 765 192.9

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
Veto Counter