ASTROSAT CZTI

Data Quality Report

Orbit 15154

Creation date: 2024-06-27T17:04:30.034824
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/AS1A04_218T08_9000002236_15154cztM0_level2.evt modeM0/AS1A04_218T08_9000002236_15154cztM0_level2_quad_clean.evt
Size (bytes)469,428,480107,003,520
Size447.7 MB 102.0 MB
Events in quadrant A3,521,886693,984
Events in quadrant B3,353,384720,363
Events in quadrant C3,455,378712,631
Events in quadrant D3,451,236667,007

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147713
B0139522
C0143812
D0145362

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6405430.671351%
B6405600.936768%
C6405200.312256%
D6405610.952381%

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 7786 6407 0 0 0.00% 0.00%
B 7786 6407 7 7 0.09% 0.11%
C 7786 6407 3 3 0.04% 0.05%
D 7786 6407 66 66 0.85% 1.03%

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 15 239 427868 2675.74 797 783 159.6
A 12 189 24081 145.96 797 783 159.6
A 0 226 6853 38.03 797 783 159.6
B 4 48 48133 315.31 814 796 150.1
B 0 229 45319 296.57 814 796 150.1
B 3 64 37880 247.02 814 796 150.1
C 3 233 360128 1988.41 793 800 180.7
C 13 61 5792 27.62 793 800 180.7
C 9 236 3157 13.04 793 800 180.7
D 2 16 270410 1453.92 776 754 185.5
D 2 33 153125 821.55 776 754 185.5
D 13 172 55000 292.48 776 754 185.5

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