ASTROSAT CZTI

Data Quality Report

Orbit 46832

Creation date: 2024-06-27T23:28:14.435667
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_053T01_9000006274_46832cztM0_level2.fits modeM0/AS1A13_053T01_9000006274_46832cztM0_level2_quad_clean.evt
Size (bytes)575,323,20097,810,560
Size548.7 MB 93.3 MB
Events in quadrant A5,865,466664,593
Events in quadrant B5,066,355672,370
Events in quadrant C2,753,226668,481
Events in quadrant D7,118,061511,726

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209121
B0194621
C0129991
D0255142

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63691542.417962%
B63702994.693878%
C6370260.408163%
D6369133320.929502%

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 7239 6370 23 23 0.32% 0.36%
B 7240 6371 148 148 2.04% 2.32%
C 7240 6371 3 3 0.04% 0.05%
D 7239 6369 1150 1150 15.89% 18.06%

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 3092105 21387.52 693 677 144.5
A 15 235 42569 289.82 693 677 144.5
A 9 191 37829 257.03 693 677 144.5
B 3 112 2216698 16297.21 681 660 136.0
B 15 36 42114 304.86 681 660 136.0
B 0 190 22587 161.26 681 660 136.0
C 14 254 39566 241.27 684 686 161.1
C 1 241 29154 176.66 684 686 161.1
C 3 233 13680 80.63 684 686 161.1
D 1 52 4274455 27159.7 627 607 157.4
D 13 249 301892 1914.62 627 607 157.4
D 2 249 88178 556.5 627 607 157.4

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