ASTROSAT CZTI

Data Quality Report

Orbit 14960

Creation date: 2024-06-27T17:01:50.109286
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/AS1T02_056T01_9000002210_14960cztM0_level2.evt modeM0/AS1T02_056T01_9000002210_14960cztM0_level2_quad_clean.evt
Size (bytes)1,968,955,200227,142,720
Size1.8 GB 216.6 MB
Events in quadrant A9,013,5911,467,753
Events in quadrant B10,456,6471,445,485
Events in quadrant C8,993,6451,439,936
Events in quadrant D29,939,1781,267,703

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0387424
B0431153
C0384343
D01014483

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182421040.570113%
B182424862.664182%
C18242560.306984%
D18242652935.791032%

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 20193 18246 6 6 0.03% 0.03%
B 20193 18246 259 259 1.28% 1.42%
C 20193 18246 1 1 0.00% 0.01%
D 20193 18246 6516 6516 32.27% 35.71%

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 1 162 242056 553.18 2142 2098 433.8
A 12 189 176322 401.64 2142 2098 433.8
A 1 178 113068 255.82 2142 2098 433.8
B 10 16 757168 1890.27 2115 2061 399.5
B 3 64 708848 1769.31 2115 2061 399.5
B 0 189 195842 485.09 2115 2061 399.5
C 3 233 523506 1086.95 2078 2090 479.7
C 7 247 339450 703.27 2078 2090 479.7
C 14 234 20743 38.88 2078 2090 479.7
D 7 254 21948669 45267.75 1814 1779 484.8
D 7 38 339682 696.96 1814 1779 484.8
D 13 249 142767 290.8 1814 1779 484.8

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