ASTROSAT CZTI

Data Quality Report

Orbit 15402

Creation date: 2024-06-27T17:08:02.621729
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/AS1G08_072T01_9000002272_15402cztM0_level2.evt modeM0/AS1G08_072T01_9000002272_15402cztM0_level2_quad_clean.evt
Size (bytes)587,894,400107,850,240
Size560.7 MB 102.9 MB
Events in quadrant A3,588,146720,382
Events in quadrant B3,985,573725,953
Events in quadrant C3,411,929713,574
Events in quadrant D6,367,674641,907

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149372
B0161511
C0144841
D0235071

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66571512.268289%
B66572043.064443%
C6657741.111612%
D66576629.944419%

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 7803 6658 31 31 0.40% 0.47%
B 7803 6658 48 48 0.62% 0.72%
C 7803 6659 0 0 0.00% 0.00%
D 7803 6658 502 502 6.43% 7.54%

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 7 16 235508 1359.7 848 831 172.6
A 14 238 68987 394.89 848 831 172.6
A 9 143 14775 80.79 848 831 172.6
B 10 16 360333 2265.18 841 824 158.7
B 0 190 85857 535.77 841 824 158.7
B 8 3 53125 329.54 841 824 158.7
C 3 233 130568 698.93 809 815 185.6
C 7 247 75828 404.07 809 815 185.6
C 3 9 47305 250.42 809 815 185.6
D 7 223 1604384 8338.24 786 762 192.3
D 13 122 779115 4047.15 786 762 192.3
D 9 68 706943 3671.88 786 762 192.3

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