ASTROSAT CZTI

Data Quality Report

Orbit 03920

Creation date: 2024-06-27T14:35:14.064361
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_172T01_9000000502_03920cztM0_level2.evt modeM0/AS1G05_172T01_9000000502_03920cztM0_level2_quad_clean.evt
Size (bytes)450,875,52065,122,560
Size430.0 MB 62.1 MB
Events in quadrant A3,795,663386,022
Events in quadrant B3,071,249393,812
Events in quadrant C2,790,076385,296
Events in quadrant D3,568,113365,151

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153663
B0133212
C0128472
D0150152

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6318450.712251%
B6318410.648940%
C631850.079139%
D63191642.595347%

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 7543 6319 25 25 0.33% 0.40%
B 7543 6319 19 19 0.25% 0.30%
C 7543 6319 0 0 0.00% 0.00%
D 7544 6320 159 159 2.11% 2.52%

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 676486 4574.51 732 718 147.7
A 0 118 150124 1011.38 732 718 147.7
A 0 50 81843 549.16 732 718 147.7
B 4 170 66460 461.83 744 726 142.3
B 15 204 31003 212.72 744 726 142.3
B 7 221 27073 185.11 744 726 142.3
C 10 65 29482 176.1 705 708 163.4
C 13 61 5979 32.26 705 708 163.4
C 1 16 2870 13.23 705 708 163.4
D 2 232 414846 2521.66 690 672 164.2
D 13 223 150668 913.24 690 672 164.2
D 13 239 113961 689.75 690 672 164.2

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
Veto Counter