ASTROSAT CZTI

Data Quality Report

Orbit 13420

Creation date: 2024-06-27T16:40:31.904378
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/AS1A04_103T01_9000001988_13420cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13420cztM0_level2_quad_clean.evt
Size (bytes)469,615,68099,659,520
Size447.9 MB 95.0 MB
Events in quadrant A3,227,046647,465
Events in quadrant B3,386,892662,928
Events in quadrant C3,133,655638,921
Events in quadrant D4,019,472601,819

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140883
B0144722
C0137992
D0164202

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6701360.537233%
B6701791.178929%
C6701120.179078%
D67011261.880316%

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 7612 6703 8 8 0.11% 0.12%
B 7612 6702 18 18 0.24% 0.27%
C 7612 6703 3 3 0.04% 0.04%
D 7612 6703 109 109 1.43% 1.63%

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 69 61673 370.5 805 787 164.3
A 8 15 53822 322.72 805 787 164.3
A 1 162 10721 60.45 805 787 164.3
B 3 64 99245 633.85 813 793 155.3
B 0 230 37910 238.96 813 793 155.3
B 0 214 29481 184.7 813 793 155.3
C 3 233 67145 368.95 781 786 179.9
C 14 220 21853 117.13 781 786 179.9
C 13 61 5798 27.87 781 786 179.9
D 1 52 508230 2760.15 765 744 183.9
D 13 249 373243 2025.98 765 744 183.9
D 8 195 242526 1315.02 765 744 183.9

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