ASTROSAT CZTI

Data Quality Report

Orbit 08794

Creation date: 2024-06-27T15:37:19.350214
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/AS1G07_010T03_9000001224_08794cztM0_level2.evt modeM0/AS1G07_010T03_9000001224_08794cztM0_level2_quad_clean.evt
Size (bytes)1,121,760,000172,463,040
Size1.0 GB 164.5 MB
Events in quadrant A7,416,6811,066,327
Events in quadrant B7,022,5741,076,848
Events in quadrant C6,711,3181,064,211
Events in quadrant D11,829,6381,001,809

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03020
B03020
C03022
D03020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A031280106
B030549114
C030042125
D045382294

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A146921821.238769%
B146872031.382175%
C146801050.715259%
D1464911457.816233%

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 16642 14733 9 9 0.05% 0.06%
B 16642 14734 10 10 0.06% 0.07%
C 16642 14732 1 1 0.01% 0.01%
D 16642 14727 867 867 5.21% 5.89%

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 8 5 439773 1241.13 1750 1709 353.0
A 13 251 150995 422.96 1750 1709 353.0
A 15 223 36543 98.69 1750 1709 353.0
B 4 173 123566 360.36 1753 1708 338.2
B 4 80 74972 216.66 1753 1708 338.2
B 12 111 38975 110.21 1753 1708 338.2
C 14 234 15931 35.8 1707 1716 397.1
C 9 54 14382 31.89 1707 1716 397.1
C 13 61 12838 28.01 1707 1716 397.1
D 2 16 4639604 11287.9 1646 1607 410.9
D 2 152 339280 821.82 1646 1607 410.9
D 1 52 288422 698.05 1646 1607 410.9

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