ASTROSAT CZTI

Data Quality Report

Orbit 03660

Creation date: 2024-06-27T14:32:04.613840
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_234T02_9000000474_03660cztM0_level2.evt modeM0/AS1G05_234T02_9000000474_03660cztM0_level2_quad_clean.evt
Size (bytes)444,225,60077,921,280
Size423.6 MB 74.3 MB
Events in quadrant A3,462,591485,269
Events in quadrant B3,485,365485,589
Events in quadrant C2,952,583477,613
Events in quadrant D3,115,756462,438

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145033
B0144132
C0131732
D0137362

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64311482.301353%
B6431961.492769%
C6431681.057378%
D6432931.445896%

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 7611 6432 45 45 0.59% 0.70%
B 7611 6432 2 2 0.03% 0.03%
C 7611 6432 0 0 0.00% 0.00%
D 7612 6433 21 21 0.28% 0.33%

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 13 164 290046 1796.49 784 767 161.0
A 0 50 78648 483.66 784 767 161.0
A 13 251 36450 221.6 784 767 161.0
B 15 204 305262 2009.47 790 773 151.5
B 4 81 34944 225.51 790 773 151.5
B 4 172 17952 113.37 790 773 151.5
C 9 247 10368 55.09 752 755 174.5
C 13 61 6458 32.68 752 755 174.5
C 12 4 3016 12.96 752 755 174.5
D 13 223 108286 592.98 756 736 181.4
D 13 239 62594 341.06 756 736 181.4
D 8 195 24170 129.2 756 736 181.4

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