ASTROSAT CZTI

Data Quality Report

Orbit 12105

Creation date: 2024-06-27T16:22:28.910600
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_065T01_9000001796_12105cztM0_level2.evt modeM0/AS1G08_065T01_9000001796_12105cztM0_level2_quad_clean.evt
Size (bytes)671,250,240115,246,080
Size640.2 MB 109.9 MB
Events in quadrant A4,711,019748,597
Events in quadrant B5,454,082725,560
Events in quadrant C3,796,403752,646
Events in quadrant D5,817,994699,401

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0195093
B0217592
C0171252
D0230412

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81113284.043891%
B81116467.964493%
C8111650.801381%
D81114525.572679%

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 8472 8115 141 141 1.66% 1.74%
B 8472 8113 256 256 3.02% 3.16%
C 8472 8115 1 1 0.01% 0.01%
D 8472 8115 297 297 3.51% 3.66%

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 14 63 542803 2708.11 979 959 200.1
A 1 162 154970 769.74 979 959 200.1
A 1 178 64786 319.0 979 959 200.1
B 4 239 1391252 7545.46 957 930 184.3
B 11 51 165623 893.81 957 930 184.3
B 15 204 74705 400.39 957 930 184.3
C 15 208 18113 76.06 966 969 225.4
C 13 61 7083 27.12 966 969 225.4
C 8 128 3864 12.84 966 969 225.4
D 14 34 878715 3863.15 937 910 227.2
D 1 52 616522 2709.26 937 910 227.2
D 8 195 295425 1296.14 937 910 227.2

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