ASTROSAT CZTI

Data Quality Report

Orbit 38162

Creation date: 2024-06-27T21:49:12.050968
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/AS1A07_145T01_9000005370_38162cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38162cztM0_level2_quad_clean.evt
Size (bytes)327,968,64097,145,280
Size312.8 MB 92.6 MB
Events in quadrant A3,003,453652,609
Events in quadrant B2,726,584667,404
Events in quadrant C2,737,111634,706
Events in quadrant D3,228,699587,927

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122923
B0119152
C0116622
D0131912

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5705120.210342%
B5705350.613497%
C5705200.350570%
D5705410.718668%

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 7137 5706 5 5 0.07% 0.09%
B 7137 5706 15 15 0.21% 0.26%
C 7137 5706 15 15 0.21% 0.26%
D 7137 5706 39 39 0.55% 0.68%

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 10 83 381712 2917.67 642 629 130.6
A 12 189 68540 519.94 642 629 130.6
A 9 143 51061 386.12 642 629 130.6
B 4 171 126091 1006.73 637 621 124.6
B 5 172 74431 592.23 637 621 124.6
B 12 111 15523 119.57 637 621 124.6
C 15 214 238150 1620.67 622 625 146.6
C 1 23 49720 334.98 622 625 146.6
C 15 159 8925 56.63 622 625 146.6
D 10 203 160828 1050.37 624 608 152.5
D 12 235 148444 969.19 624 608 152.5
D 2 250 113475 739.94 624 608 152.5

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