ASTROSAT CZTI

Data Quality Report

Orbit 31181

Creation date: 2024-06-27T20:24:23.476414
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/AS1A10_058T02_9000004510_31181cztM0_level2.evt modeM0/AS1A10_058T02_9000004510_31181cztM0_level2_quad_clean.evt
Size (bytes)627,137,28083,727,360
Size598.1 MB 79.8 MB
Events in quadrant A3,405,703539,274
Events in quadrant B5,693,990533,637
Events in quadrant C3,847,376514,034
Events in quadrant D5,617,148505,681

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140432
B0210692
C0154182
D0212742

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6348821.291745%
B63484487.057341%
C63484256.695022%
D63481592.504726%

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 7513 6349 1 1 0.01% 0.02%
B 7513 6349 132 132 1.76% 2.08%
C 7513 6349 45 45 0.60% 0.71%
D 7513 6349 18 18 0.24% 0.28%

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 12 96 23263 128.5 877 863 174.3
A 13 254 12304 65.63 877 863 174.3
A 3 137 8593 44.34 877 863 174.3
B 6 159 1698387 10585.84 845 827 160.4
B 4 80 568111 3537.53 845 827 160.4
B 0 190 49971 306.46 845 827 160.4
C 0 10 339504 1764.6 825 834 191.9
C 14 238 182182 944.89 825 834 191.9
C 14 254 68319 351.62 825 834 191.9
D 8 195 2246850 11188.31 851 831 200.7
D 2 250 79902 393.88 851 831 200.7
D 2 69 31494 152.74 851 831 200.7

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