ASTROSAT CZTI

Data Quality Report

Orbit 46664

Creation date: 2024-06-27T23:26:07.033176
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/AS1A13_039T01_9000006246_46664cztM0_level2.fits modeM0/AS1A13_039T01_9000006246_46664cztM0_level2_quad_clean.evt
Size (bytes)512,159,040109,670,400
Size488.4 MB 104.6 MB
Events in quadrant A6,538,529717,643
Events in quadrant B4,074,085758,500
Events in quadrant C3,063,039739,950
Events in quadrant D4,753,650628,765

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0239412
B0167912
C0143782
D0192292

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68232593.795984%
B68231612.359666%
C6823350.512971%
D68234546.653965%

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 7943 6824 66 66 0.83% 0.97%
B 7943 6824 45 45 0.57% 0.66%
C 7943 6824 18 18 0.23% 0.26%
D 7943 6824 357 357 4.49% 5.23%

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 3632678 24510.94 717 703 148.2
A 9 191 45433 301.87 717 703 148.2
A 15 254 24340 159.52 717 703 148.2
B 0 189 499254 3493.47 731 711 142.7
B 4 171 215186 1502.9 731 711 142.7
B 0 198 197369 1378.05 731 711 142.7
C 1 241 154844 925.61 718 722 166.5
C 14 254 49437 292.57 718 722 166.5
C 12 2 16689 95.89 718 722 166.5
D 13 249 822681 4746.81 686 663 173.2
D 12 128 304432 1754.14 686 663 173.2
D 15 217 216793 1248.06 686 663 173.2

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter