ASTROSAT CZTI

Data Quality Report

Orbit 21355

Creation date: 2024-06-27T18:26:43.512134
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/AS1A05_041T01_9000003150_21355cztM0_level2.evt modeM0/AS1A05_041T01_9000003150_21355cztM0_level2_quad_clean.evt
Size (bytes)558,371,520104,932,800
Size532.5 MB 100.1 MB
Events in quadrant A3,710,539674,586
Events in quadrant B3,769,780680,937
Events in quadrant C3,744,661657,477
Events in quadrant D5,173,848640,356

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159532
B0161952
C0160102
D0207702

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7537971.286984%
B75381872.480764%
C75381902.520562%
D75385226.924914%

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 8162 7539 0 0 0.00% 0.00%
B 8163 7538 33 33 0.40% 0.44%
C 8163 7538 0 0 0.00% 0.00%
D 8163 7540 371 371 4.54% 4.92%

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 5 168 120319 635.42 926 906 187.9
A 11 47 19712 100.07 926 906 187.9
A 13 254 8538 40.61 926 906 187.9
B 3 64 115281 644.41 915 889 177.5
B 0 230 45180 249.51 915 889 177.5
B 6 36 23865 129.43 915 889 177.5
C 14 238 137245 643.26 893 898 212.0
C 3 233 125079 585.86 893 898 212.0
C 13 61 6037 24.24 893 898 212.0
D 12 235 871381 3992.7 884 856 218.0
D 1 52 642325 2942.12 884 856 218.0
D 15 35 187153 854.46 884 856 218.0

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