ASTROSAT CZTI

Data Quality Report

Orbit 19495

Creation date: 2024-06-27T18:03:27.295114
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/AS1A05_062T01_9000002892_19495cztM0_level2.evt modeM0/AS1A05_062T01_9000002892_19495cztM0_level2_quad_clean.evt
Size (bytes)519,117,12099,567,360
Size495.1 MB 95.0 MB
Events in quadrant A3,325,254654,454
Events in quadrant B3,405,561665,471
Events in quadrant C3,757,701638,410
Events in quadrant D4,803,188614,453

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137392
B0139902
C0151002
D0184232

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6345340.535855%
B6344550.866961%
C63441081.702396%
D63442423.814628%

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 7545 6345 0 0 0.00% 0.00%
B 7544 6345 22 22 0.29% 0.35%
C 7544 6345 18 18 0.24% 0.28%
D 7544 6345 208 208 2.76% 3.28%

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 10 253 98453 588.47 830 814 165.9
A 11 29 21649 125.57 830 814 165.9
A 0 226 7330 39.27 830 814 165.9
B 7 220 87618 566.42 822 803 153.3
B 4 171 30553 194.1 822 803 153.3
B 0 244 25680 162.31 822 803 153.3
C 9 221 208039 1119.16 804 815 185.2
C 5 112 151141 811.87 804 815 185.2
C 14 238 126435 678.44 804 815 185.2
D 7 238 1062632 5391.1 810 786 197.0
D 1 52 354723 1796.97 810 786 197.0
D 12 218 205258 1038.13 810 786 197.0

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