ASTROSAT CZTI

Data Quality Report

Orbit 03860

Creation date: 2024-06-27T14:34:29.694137
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_189T01_9000000492_03860cztM0_level2.evt modeM0/AS1G05_189T01_9000000492_03860cztM0_level2_quad_clean.evt
Size (bytes)562,271,04065,894,400
Size536.2 MB 62.8 MB
Events in quadrant A3,375,571414,855
Events in quadrant B3,312,613413,600
Events in quadrant C5,046,374400,652
Events in quadrant D4,896,792355,840

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142912
B0138861
C0190761
D0189841

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58621111.893552%
B5862681.160014%
C58622844.844763%
D586282514.073695%

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 6942 5863 6 6 0.09% 0.10%
B 6942 5862 0 0 0.00% 0.00%
C 6942 5862 226 226 3.26% 3.86%
D 6942 5862 787 787 11.34% 13.43%

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 15 234 221232 1261.44 803 793 174.8
A 8 15 66157 374.04 803 793 174.8
A 12 194 8136 42.02 803 793 174.8
B 15 204 156168 994.87 766 753 156.2
B 0 187 103157 655.52 766 753 156.2
B 14 167 85428 542.03 766 753 156.2
C 2 53 2121752 11277.23 746 755 188.1
C 13 61 5913 27.42 746 755 188.1
C 14 67 5009 22.62 746 755 188.1
D 13 137 1868013 8976.25 733 721 208.0
D 13 238 120776 577.12 733 721 208.0
D 12 110 29324 137.5 733 721 208.0

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
Veto Counter