ASTROSAT CZTI

Data Quality Report

Orbit 49665

Creation date: 2024-12-09T14:25:35.698667
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/AS1T05_233T01_9000006438_49665cztM0_level2.fits modeM0/AS1T05_233T01_9000006438_49665cztM0_level2_quad_clean.evt
Size (bytes)1,202,515,20037,785,600
Size1.1 GB 36.0 MB
Events in quadrant A14,840,62991,939
Events in quadrant B4,917,524605,032
Events in quadrant C8,527,8726,269
Events in quadrant D15,756,74115,657

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0481791
B0188103
C0296101
D0510401

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6084546289.776463%
B608370711.622555%
C6084604099.276792%
D6084596798.076923%

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 7229 6085 5422 5422 75.00% 89.10%
B 7228 6084 488 488 6.75% 8.02%
C 7228 6083 524 524 7.25% 8.61%
D 7229 6085 5582 5582 77.22% 91.73%

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 83 5760312 50624.92 414 403 113.8
A 3 130 2510407 22060.89 414 403 113.8
A 12 50 946635 8316.61 414 403 113.8
B 5 49 838652 6107.9 640 621 137.2
B 4 206 462957 3369.69 640 621 137.2
B 7 0 347711 2529.73 640 621 137.2
C 15 180 2979282 107829.07 54 52 27.6
C 15 181 891969 32281.69 54 52 27.6
C 15 219 857502 31034.21 54 52 27.6
D 15 40 4382736 42849.22 246 231 102.3
D 15 184 2313226 22614.93 246 231 102.3
D 15 140 875460 8557.41 246 231 102.3

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