ASTROSAT CZTI

Data Quality Report

Orbit 46950

Creation date: 2024-06-27T23:29:48.483646
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_077T01_9000006286_46950cztM0_level2.fits modeM0/AS1A13_077T01_9000006286_46950cztM0_level2_quad_clean.evt
Size (bytes)2,707,513,920429,445,440
Size2.5 GB 409.6 MB
Events in quadrant A27,877,9102,931,675
Events in quadrant B32,918,4592,658,950
Events in quadrant C15,553,1982,890,731
Events in quadrant D21,681,3722,560,555

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05800
B05800
C05800
D05800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01028555
B01176815
C0664895
D0839125

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2849010893.822394%
B28491521818.314555%
C284919863.460742%
D2849122587.925310%

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 31604 28490 34 34 0.11% 0.12%
B 31605 28490 3809 3809 12.05% 13.37%
C 31605 28490 613 613 1.94% 2.15%
D 31605 28490 1861 1861 5.89% 6.53%

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 15135544 22726.97 3209 3139 665.8
A 15 235 148302 218.02 3209 3139 665.8
A 7 3 76756 110.56 3209 3139 665.8
B 3 112 19072449 32083.84 3038 2943 594.4
B 5 32 471491 788.32 3038 2943 594.4
B 5 172 432323 722.42 3038 2943 594.4
C 12 2 1909904 2561.88 3138 3152 744.3
C 14 254 1286073 1723.71 3138 3152 744.3
C 0 207 28190 33.64 3138 3152 744.3
D 1 52 6116091 7867.1 3097 3004 777.0
D 13 249 2364473 3039.04 3097 3004 777.0
D 1 47 303332 386.5 3097 3004 777.0

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