ASTROSAT CZTI

Data Quality Report

Orbit 16194

Creation date: 2024-06-27T17:19:10.837752
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/AS1T02_109T01_9000002386_16194cztM0_level2.evt modeM0/AS1T02_109T01_9000002386_16194cztM0_level2_quad_clean.evt
Size (bytes)485,467,20094,000,320
Size463.0 MB 89.6 MB
Events in quadrant A4,388,609603,068
Events in quadrant B3,389,553618,717
Events in quadrant C3,177,334588,659
Events in quadrant D3,301,242578,201

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169562
B0139091
C0134141
D0141001

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65642073.153565%
B6564360.548446%
C6564530.807434%
D6564440.670323%

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 7730 6566 217 217 2.81% 3.30%
B 7730 6566 0 0 0.00% 0.00%
C 7730 6566 0 0 0.00% 0.00%
D 7730 6566 40 40 0.52% 0.61%

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 15 157 1198048 7306.69 817 801 163.9
A 8 247 25749 152.26 817 801 163.9
A 9 143 13084 74.96 817 801 163.9
B 3 64 99749 638.32 816 797 155.0
B 0 229 48434 307.29 816 797 155.0
B 12 111 17948 110.64 816 797 155.0
C 14 238 125120 687.1 776 781 181.0
C 3 233 14770 77.3 776 781 181.0
C 7 247 5727 27.33 776 781 181.0
D 1 52 106920 549.34 793 769 193.2
D 10 70 106071 544.95 793 769 193.2
D 13 112 57553 293.86 793 769 193.2

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