ASTROSAT CZTI

Data Quality Report

Orbit 03181

Creation date: 2024-06-27T14:25:36.127366
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/AS1G05_127T01_9000000436_03181cztM0_level2.evt modeM0/AS1G05_127T01_9000000436_03181cztM0_level2_quad_clean.evt
Size (bytes)613,111,68088,156,800
Size584.7 MB 84.1 MB
Events in quadrant A3,716,054569,247
Events in quadrant B3,340,445596,318
Events in quadrant C7,675,510478,681
Events in quadrant D3,387,396563,156

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155133
B0144552
C0274092
D0148932

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66192904.381326%
B6619911.374830%
C6619183727.753437%
D66191101.661882%

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 8599 6621 180 180 2.09% 2.72%
B 8599 6619 9 9 0.10% 0.14%
C 8598 6618 1511 1511 17.57% 22.83%
D 8599 6620 61 61 0.71% 0.92%

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 14 249 700762 4464.46 763 749 156.8
A 8 15 63302 398.94 763 749 156.8
A 12 194 8188 47.44 763 749 156.8
B 4 80 113988 740.92 798 781 152.8
B 15 85 52616 339.25 798 781 152.8
B 2 249 33365 213.25 798 781 152.8
C 12 206 4402509 28251.18 665 670 155.8
C 1 192 429224 2750.48 665 670 155.8
C 14 223 151647 968.98 665 670 155.8
D 13 120 174128 947.28 752 731 183.0
D 5 233 123062 668.3 752 731 183.0
D 12 233 71702 387.72 752 731 183.0

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