ASTROSAT CZTI

Data Quality Report

Orbit 04878

Creation date: 2024-06-27T14:48:20.263520
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_237T01_9000000620_04878cztM0_level2.evt modeM0/AS1G05_237T01_9000000620_04878cztM0_level2_quad_clean.evt
Size (bytes)485,893,44062,521,920
Size463.4 MB 59.6 MB
Events in quadrant A3,286,535364,717
Events in quadrant B3,663,929366,572
Events in quadrant C3,201,989363,149
Events in quadrant D4,120,644344,068

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136873
B0149142
C0135232
D0163822

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65061051.613895%
B65061562.397787%
C6506731.122041%
D65062844.365201%

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 7756 6506 0 0 0.00% 0.00%
B 7756 6506 40 40 0.52% 0.61%
C 7756 6506 0 0 0.00% 0.00%
D 7756 6506 159 159 2.05% 2.44%

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 20497 114.7 847 832 171.5
A 12 194 8633 45.5 847 832 171.5
A 0 226 8615 45.39 847 832 171.5
B 4 80 132137 821.45 846 831 159.8
B 15 204 102068 633.34 846 831 159.8
B 7 252 83675 518.27 846 831 159.8
C 13 61 6805 31.72 819 825 188.5
C 12 4 2444 8.59 819 825 188.5
C 5 174 2288 7.76 819 825 188.5
D 12 233 387986 1941.46 811 788 199.4
D 13 235 202388 1010.85 811 788 199.4
D 2 136 115072 573.03 811 788 199.4

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