ASTROSAT CZTI

Data Quality Report

Orbit 22158

Creation date: 2024-06-27T18:37:34.135284
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/AS1T03_145T01_9000003278_22158cztM0_level2.evt modeM0/AS1T03_145T01_9000003278_22158cztM0_level2_quad_clean.evt
Size (bytes)460,342,08081,092,160
Size439.0 MB 77.3 MB
Events in quadrant A3,223,519504,115
Events in quadrant B3,327,306520,066
Events in quadrant C3,320,604498,597
Events in quadrant D3,630,972481,748

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135122
B0138242
C0138282
D0150332

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6460380.588235%
B6460590.913313%
C6460861.331269%
D64611492.306145%

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 8705 6462 0 0 0.00% 0.00%
B 8705 6462 2 2 0.02% 0.03%
C 8705 6462 0 0 0.00% 0.00%
D 8706 6463 103 103 1.18% 1.59%

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 13 254 9640 53.21 836 821 165.7
A 0 226 7075 37.73 836 821 165.7
A 3 137 7008 37.33 836 821 165.7
B 10 246 38765 240.89 838 818 157.5
B 12 111 18830 114.34 838 818 157.5
B 11 111 16762 101.21 838 818 157.5
C 14 238 130483 687.02 817 825 188.7
C 13 61 5538 24.97 817 825 188.7
C 0 10 3755 15.52 817 825 188.7
D 1 52 365935 1857.39 818 796 196.6
D 10 230 119958 606.15 818 796 196.6
D 2 136 32848 163.04 818 796 196.6

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