ASTROSAT CZTI

Data Quality Report

Orbit 35811

Creation date: 2022-05-19T12:37:26.404269
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/AS1A09_146T01_9000005142_35811cztM0_level2.evt modeM0/AS1A09_146T01_9000005142_35811cztM0_level2_quad_clean.evt
Size (bytes)475,283,520107,112,960
Size453.3 MB 102.2 MB
Events in quadrant A3,835,356736,010
Events in quadrant B3,180,689741,790
Events in quadrant C3,391,884706,815
Events in quadrant D3,622,055683,596

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151163
B0128272
C0133312
D0141952

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53691202.235053%
B5369400.745018%
C53691272.365431%
D5369981.825293%

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 7372 5370 48 48 0.65% 0.89%
B 7372 5370 22 22 0.30% 0.41%
C 7372 5370 117 117 1.59% 2.18%
D 7372 5370 104 104 1.41% 1.94%

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 15 169 954906 6921.85 699 687 137.9
A 10 83 155578 1123.57 699 687 137.9
A 13 6 19898 139.36 699 687 137.9
B 5 172 187656 1459.19 688 673 128.1
B 5 255 81336 629.48 688 673 128.1
B 4 232 73558 568.79 688 673 128.1
C 0 10 360903 2372.38 663 670 151.8
C 15 214 225772 1482.45 663 670 151.8
C 10 49 117814 771.47 663 670 151.8
D 7 223 275473 1691.06 678 660 162.5
D 13 249 207824 1274.78 678 660 162.5
D 2 249 126499 774.35 678 660 162.5

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