ASTROSAT CZTI

Data Quality Report

Orbit 14735

Creation date: 2024-06-27T16:59:15.294678
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/AS1G08_081T01_9000002178_14735cztM0_level2.evt modeM0/AS1G08_081T01_9000002178_14735cztM0_level2_quad_clean.evt
Size (bytes)515,341,44090,864,000
Size491.5 MB 86.7 MB
Events in quadrant A4,741,611586,415
Events in quadrant B3,562,549586,024
Events in quadrant C3,562,145572,966
Events in quadrant D3,320,430573,271

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183203
B0146892
C0145532
D0137962

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62042904.674404%
B62041482.385558%
C6204961.547389%
D62041171.885880%

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 8865 6205 27 27 0.30% 0.44%
B 8865 6205 10 10 0.11% 0.16%
C 8865 6205 0 0 0.00% 0.00%
D 8865 6205 13 13 0.15% 0.21%

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 15 1417222 8363.7 853 837 169.3
A 12 189 34450 198.48 853 837 169.3
A 3 1 7821 41.24 853 837 169.3
B 0 197 95125 590.91 851 833 159.6
B 0 205 49900 307.49 851 833 159.6
B 0 189 43747 268.93 851 833 159.6
C 3 233 289381 1517.46 836 844 190.1
C 14 220 7807 36.62 836 844 190.1
C 13 61 6180 28.06 836 844 190.1
D 13 172 78666 359.93 840 821 216.3
D 12 16 44967 204.12 840 821 216.3
D 2 234 21418 95.23 840 821 216.3

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