ASTROSAT CZTI

Data Quality Report

Orbit 12303

Creation date: 2024-06-27T16:25:11.095054
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_183T02_9000001816_12303cztM0_level2.evt modeM0/AS1A04_183T02_9000001816_12303cztM0_level2_quad_clean.evt
Size (bytes)496,549,44065,321,280
Size473.5 MB 62.3 MB
Events in quadrant A3,666,946385,472
Events in quadrant B4,380,221387,683
Events in quadrant C3,176,740394,689
Events in quadrant D3,391,211374,743

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147963
B0169782
C0132302
D0138882

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62271061.702264%
B62273114.994379%
C6227480.770837%
D6227921.477437%

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 7573 6229 5 5 0.07% 0.08%
B 7573 6229 152 152 2.01% 2.44%
C 7573 6229 5 5 0.07% 0.08%
D 7573 6229 36 36 0.48% 0.58%

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 1 162 152831 914.47 823 809 166.2
A 1 178 87965 524.27 823 809 166.2
A 1 161 76566 455.71 823 809 166.2
B 4 239 696087 4512.76 821 803 154.1
B 0 85 399557 2588.13 821 803 154.1
B 0 197 18974 117.94 821 803 154.1
C 14 234 47147 252.65 800 805 183.4
C 4 254 11758 59.71 800 805 183.4
C 13 61 5760 27.01 800 805 183.4
D 10 199 130495 690.61 789 769 187.8
D 11 129 101283 535.1 789 769 187.8
D 10 50 55287 290.23 789 769 187.8

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