ASTROSAT CZTI

Data Quality Report

Orbit 11727

Creation date: 2024-06-27T16:17:28.847204
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/AS1G08_006T01_9000001728_11727cztM0_level2.evt modeM0/AS1G08_006T01_9000001728_11727cztM0_level2_quad_clean.evt
Size (bytes)755,884,800127,851,840
Size720.9 MB 121.9 MB
Events in quadrant A6,739,033832,483
Events in quadrant B5,351,221853,638
Events in quadrant C3,316,072874,893
Events in quadrant D6,990,838800,590

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0252582
B0206921
C0150461
D0257721

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A732878010.644105%
B73286568.951965%
C73281562.128821%
D73286909.415939%

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 7714 7330 298 298 3.86% 4.07%
B 7714 7330 261 261 3.38% 3.56%
C 7714 7330 0 0 0.00% 0.00%
D 7714 7330 563 563 7.30% 7.68%

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 8 15 2714427 15897.58 843 822 170.7
A 1 162 226510 1322.19 843 822 170.7
A 9 143 167295 975.28 843 822 170.7
B 4 239 1024906 6443.35 846 823 158.9
B 3 64 507021 3184.91 846 823 158.9
B 15 204 196537 1231.4 846 823 158.9
C 4 222 23340 116.38 843 845 193.3
C 13 61 6158 27.49 843 845 193.3
C 8 222 4275 17.75 843 845 193.3
D 1 52 2572810 13000.64 824 798 197.8
D 8 195 486110 2453.09 824 798 197.8
D 13 137 228186 1149.37 824 798 197.8

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