ASTROSAT CZTI

Data Quality Report

Orbit 18906

Creation date: 2024-06-27T17:56:22.748170
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/AS1A05_163T01_9000002820_18906cztM0_level2.evt modeM0/AS1A05_163T01_9000002820_18906cztM0_level2_quad_clean.evt
Size (bytes)827,637,12076,616,640
Size789.3 MB 73.1 MB
Events in quadrant A9,895,791365,388
Events in quadrant B5,708,739490,792
Events in quadrant C3,321,736504,749
Events in quadrant D5,689,622494,067

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0338822
B0212441
C0137011
D0212031

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6655272740.976709%
B665687813.191106%
C66561321.983173%
D66566499.750601%

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 7475 6656 2039 2039 27.28% 30.63%
B 7475 6656 478 478 6.39% 7.18%
C 7476 6657 0 0 0.00% 0.00%
D 7476 6656 435 435 5.82% 6.54%

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 14 235 7193558 50798.71 698 685 141.6
A 13 254 8577 55.74 698 685 141.6
A 11 29 6892 43.84 698 685 141.6
B 3 112 2419832 16250.21 784 766 148.9
B 7 220 154144 1030.33 784 766 148.9
B 12 111 17596 113.06 784 766 148.9
C 14 238 124578 664.64 801 806 186.2
C 3 233 54080 286.08 801 806 186.2
C 8 128 9532 46.86 801 806 186.2
D 7 238 2191139 11243.28 799 775 194.8
D 1 52 217184 1110.84 799 775 194.8
D 12 233 106221 541.26 799 775 194.8

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