ASTROSAT CZTI

Data Quality Report

Orbit 05271

Creation date: 2024-06-27T14:53:22.624801
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_240T02_9000000670_05271cztM0_level2.evt modeM0/AS1G05_240T02_9000000670_05271cztM0_level2_quad_clean.evt
Size (bytes)512,124,48084,496,320
Size488.4 MB 80.6 MB
Events in quadrant A3,274,632525,245
Events in quadrant B3,285,977532,344
Events in quadrant C3,218,520520,137
Events in quadrant D5,246,754484,822

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147403
B0145982
C0145914
D0205262

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71261161.627842%
B7126861.206848%
C7125731.024561%
D71265237.339321%

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 7806 7126 7 7 0.09% 0.10%
B 7806 7127 0 0 0.00% 0.00%
C 7806 7127 0 0 0.00% 0.00%
D 7806 7126 358 358 4.59% 5.02%

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 37799 216.9 828 809 170.5
A 13 251 35881 205.66 828 809 170.5
A 0 254 9505 50.99 828 809 170.5
B 12 111 15324 89.71 837 816 161.7
B 15 204 13586 78.96 837 816 161.7
B 8 3 12973 75.17 837 816 161.7
C 14 67 21407 108.32 815 816 190.1
C 8 222 12430 61.09 815 816 190.1
C 13 61 6440 29.58 815 816 190.1
D 11 145 1635543 8421.38 791 765 194.1
D 1 31 295642 1519.03 791 765 194.1
D 2 136 121919 624.11 791 765 194.1

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