ASTROSAT CZTI

Data Quality Report

Orbit 20220504_A09_029T04_9000005110_level2

Creation date: 2022-05-11T12:26:38.211064
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_029T04_9000005110cztM0_level2_bc.evt modeM0/AS1A09_029T04_9000005110cztM0_level2_quad_clean.evt
Size (bytes)1,549,272,960529,620,480
Size1.4 GB 505.1 MB
Events in quadrant A9,263,8973,381,471
Events in quadrant B12,546,8673,392,874
Events in quadrant C9,593,4383,376,791
Events in quadrant D12,819,8643,176,715

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08100
B08090
C08080
D08110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0822790
B0984490
C0816950
D0994710

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A39525470.118912%
B3952216714.228025%
C395201090.275810%
D3948115894.024721%

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 57551 39629 1 1 0.00% 0.00%
B 57551 39627 126 126 0.22% 0.32%
C 57551 39633 9 9 0.02% 0.02%
D 57551 39598 90 90 0.16% 0.23%

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 818205 1843.05 1958 1926 442.9
A 15 169 623972 1404.5 1958 1926 442.9
A 15 223 124892 277.64 1958 1926 442.9
B 5 172 3294901 8454.36 1935 1888 389.5
B 5 255 1197037 3068.38 1935 1888 389.5
B 0 190 149427 378.79 1935 1888 389.5
C 15 214 1572174 3553.97 1901 1880 441.8
C 0 10 371268 836.02 1901 1880 441.8
C 0 239 103185 229.28 1901 1880 441.8
D 13 249 2378425 5230.05 1888 1824 454.4
D 2 250 670802 1472.18 1888 1824 454.4
D 2 249 636140 1395.9 1888 1824 454.4

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