ASTROSAT CZTI

Data Quality Report

Orbit 09927

Creation date: 2024-06-27T15:52:29.254114
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/AS1A02_029T01_9000001416_09927cztM0_level2.evt modeM0/AS1A02_029T01_9000001416_09927cztM0_level2_quad_clean.evt
Size (bytes)514,293,12089,337,600
Size490.5 MB 85.2 MB
Events in quadrant A3,353,034584,492
Events in quadrant B3,405,040592,756
Events in quadrant C2,971,521579,230
Events in quadrant D5,412,196502,843

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141277
B0142675
C0132022
D0203886

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6383781.221996%
B6384941.472431%
C6385390.610807%
D63845087.957393%

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 7625 6385 1 1 0.01% 0.02%
B 7625 6385 7 7 0.09% 0.11%
C 7625 6385 3 3 0.04% 0.05%
D 7625 6385 475 475 6.23% 7.44%

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 15 239 256360 1613.25 787 772 158.4
A 14 111 58824 366.42 787 772 158.4
A 0 226 7399 41.83 787 772 158.4
B 4 81 130795 862.09 793 775 150.8
B 4 239 57523 376.26 793 775 150.8
B 0 219 39809 258.81 793 775 150.8
C 14 128 9866 51.7 757 761 176.1
C 13 61 5968 29.57 757 761 176.1
C 14 67 4786 22.86 757 761 176.1
D 2 16 829324 4388.98 716 697 188.8
D 8 195 687061 3635.46 716 697 188.8
D 2 33 540912 2861.35 716 697 188.8

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