ASTROSAT CZTI

Data Quality Report

Orbit 12900

Creation date: 2024-06-27T16:33:43.718471
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_116T01_9000001896_12900cztM0_level2.evt modeM0/AS1A04_116T01_9000001896_12900cztM0_level2_quad_clean.evt
Size (bytes)566,881,920115,588,800
Size540.6 MB 110.2 MB
Events in quadrant A3,463,666782,315
Events in quadrant B4,884,527738,489
Events in quadrant C3,096,820778,349
Events in quadrant D5,242,929708,450

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147722
B0191441
C0143901
D0205061

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7081320.451914%
B70816258.826437%
C708150.070611%
D70815848.247423%

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 7412 7083 1 1 0.01% 0.01%
B 7412 7083 334 334 4.51% 4.72%
C 7412 7083 0 0 0.00% 0.00%
D 7412 7083 522 522 7.04% 7.37%

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 1 162 84981 497.95 827 811 169.0
A 8 15 54988 320.51 827 811 169.0
A 1 178 44689 259.58 827 811 169.0
B 4 239 1348148 9131.5 785 765 147.6
B 0 85 315395 2132.31 785 765 147.6
B 3 209 70601 473.29 785 765 147.6
C 13 61 5940 28.24 793 796 182.1
C 8 222 2238 7.92 793 796 182.1
C 3 202 1956 6.37 793 796 182.1
D 1 52 936420 5110.72 765 743 183.1
D 4 95 594945 3245.56 765 743 183.1
D 9 85 521066 2842.03 765 743 183.1

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