ASTROSAT CZTI

Data Quality Report

Orbit 17169

Creation date: 2024-06-27T17:33:07.773085
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/AS1A05_185T04_9000002548_17169cztM0_level2.evt modeM0/AS1A05_185T04_9000002548_17169cztM0_level2_quad_clean.evt
Size (bytes)481,037,76092,044,800
Size458.8 MB 87.8 MB
Events in quadrant A3,370,372587,062
Events in quadrant B3,518,791594,965
Events in quadrant C3,601,216564,009
Events in quadrant D3,605,299556,545

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145632
B0150822
C0151692
D0155062

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6956410.589419%
B6957701.006181%
C6957981.408653%
D6957430.618083%

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 9166 6959 1 1 0.01% 0.01%
B 9167 6960 7 7 0.08% 0.10%
C 9167 6960 0 0 0.00% 0.00%
D 9167 6960 18 18 0.20% 0.26%

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 12 189 79252 453.16 853 834 173.0
A 12 96 8969 47.01 853 834 173.0
A 0 226 7405 37.97 853 834 173.0
B 7 220 44981 270.59 855 832 163.2
B 0 197 35498 212.47 855 832 163.2
B 0 189 22524 132.95 855 832 163.2
C 3 233 253383 1315.24 821 828 192.0
C 14 238 125783 650.73 821 828 192.0
C 4 254 15070 74.17 821 828 192.0
D 5 222 360574 1790.52 827 804 200.9
D 2 152 31067 150.61 827 804 200.9
D 2 234 26687 128.82 827 804 200.9

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