ASTROSAT CZTI

Data Quality Report

Orbit 35160

Creation date: 2022-03-30T19:29:10.117446
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/AS1A11_069T05_9000005038_35160cztM0_level2.evt modeM0/AS1A11_069T05_9000005038_35160cztM0_level2_quad_clean.evt
Size (bytes)667,059,84091,313,280
Size636.2 MB 87.1 MB
Events in quadrant A2,990,942657,477
Events in quadrant B5,616,914594,233
Events in quadrant C3,406,991625,944
Events in quadrant D7,838,207524,483

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120413
B0203472
C0133622
D0269302

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5171260.502804%
B517190717.540128%
C51711512.920132%
D5171134926.087797%

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 9208 5173 8 8 0.09% 0.15%
B 9208 5173 627 627 6.81% 12.12%
C 9208 5173 103 103 1.12% 1.99%
D 9208 5173 1132 1132 12.29% 21.88%

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 92517 643.31 721 712 142.7
A 9 143 58032 401.66 721 712 142.7
A 15 169 40108 276.06 721 712 142.7
B 5 236 2424407 19832.38 655 641 122.2
B 5 172 382830 3127.25 655 641 122.2
B 0 182 170941 1393.47 655 641 122.2
C 0 10 330029 2148.07 669 676 153.3
C 15 214 219169 1425.03 669 676 153.3
C 1 23 116482 755.3 669 676 153.3
D 7 80 2015545 13118.29 630 616 153.6
D 8 195 1805619 11751.56 630 616 153.6
D 2 250 522178 3395.65 630 616 153.6

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