ASTROSAT CZTI

Data Quality Report

Orbit 04197

Creation date: 2024-06-27T14:38:39.546985
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_240T01_9000000536_04197cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04197cztM0_level2_quad_clean.evt
Size (bytes)597,867,84048,548,160
Size570.2 MB 46.3 MB
Events in quadrant A6,337,546244,080
Events in quadrant B3,486,226288,398
Events in quadrant C5,039,564255,617
Events in quadrant D2,845,107270,560

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0226612
B0140051
C0187931
D0123171

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5870144524.616695%
B58702073.526405%
C587080913.781942%
D5870851.448041%

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 7145 5870 944 944 13.21% 16.08%
B 7145 5871 66 66 0.92% 1.12%
C 7145 5871 657 657 9.20% 11.19%
D 7145 5871 6 6 0.08% 0.10%

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 0 50 2028182 15428.3 650 637 131.4
A 12 247 1485908 11301.95 650 637 131.4
A 15 234 214068 1624.07 650 637 131.4
B 3 0 373799 2619.82 749 732 142.4
B 10 16 109047 760.63 749 732 142.4
B 14 167 68082 472.96 749 732 142.4
C 9 144 2397794 15424.5 671 674 155.4
C 14 67 14665 90.03 671 674 155.4
C 10 65 6511 37.56 671 674 155.4
D 1 20 35858 205.12 716 695 171.4
D 13 239 30029 171.12 716 695 171.4
D 10 172 22573 127.62 716 695 171.4

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