ASTROSAT CZTI

Data Quality Report

Orbit 11464

Creation date: 2024-06-27T16:13:17.982361
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_032T01_9000001680_11464cztM0_level2.evt modeM0/AS1G08_032T01_9000001680_11464cztM0_level2_quad_clean.evt
Size (bytes)498,608,64086,670,720
Size475.5 MB 82.7 MB
Events in quadrant A2,990,330567,293
Events in quadrant B4,558,902547,095
Events in quadrant C2,923,794558,302
Events in quadrant D4,217,775530,226

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126722
B0176061
C0126361
D0164391

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6039711.175691%
B60393625.994370%
C6039430.712038%
D60393585.928134%

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 7325 6041 4 4 0.05% 0.07%
B 7325 6041 194 194 2.65% 3.21%
C 7325 6041 0 0 0.00% 0.00%
D 7325 6041 256 256 3.49% 4.24%

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 9 143 43049 278.86 749 733 151.7
A 1 162 19238 121.95 749 733 151.7
A 1 178 10162 62.13 749 733 151.7
B 3 64 671292 4905.58 729 712 136.7
B 4 239 516577 3773.78 729 712 136.7
B 15 204 208582 1520.66 729 712 136.7
C 3 9 70548 411.7 730 737 169.6
C 12 4 5659 29.02 730 737 169.6
C 13 61 5297 26.89 730 737 169.6
D 13 104 524740 3071.17 713 696 170.6
D 1 52 373141 2182.72 713 696 170.6
D 10 253 348102 2035.98 713 696 170.6

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