ASTROSAT CZTI

Data Quality Report

Orbit 15782

Creation date: 2024-06-27T17:13:21.400493
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_100T01_9000002336_15782cztM0_level2.evt modeM0/AS1A04_100T01_9000002336_15782cztM0_level2_quad_clean.evt
Size (bytes)452,174,40095,722,560
Size431.2 MB 91.3 MB
Events in quadrant A3,207,223598,339
Events in quadrant B3,482,871614,307
Events in quadrant C3,247,087602,974
Events in quadrant D3,276,287591,032

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144602
B0150641
C0144261
D0147771

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70621552.194846%
B70621662.350609%
C70621662.350609%
D70621261.784197%

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 7248 7065 0 0 0.00% 0.00%
B 7248 7065 5 5 0.07% 0.07%
C 7248 7065 0 0 0.00% 0.00%
D 7248 7065 9 9 0.12% 0.13%

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 15 157 10748 58.49 827 807 169.9
A 0 226 7133 37.22 827 807 169.9
A 9 143 7053 36.75 827 807 169.9
B 3 209 103084 643.55 826 802 158.9
B 4 216 90610 565.07 826 802 158.9
B 12 111 18606 112.02 826 802 158.9
C 14 238 123302 657.49 792 793 186.3
C 3 233 10410 51.61 792 793 186.3
C 8 128 8654 42.19 792 793 186.3
D 1 52 98796 498.03 805 780 196.8
D 2 234 34675 172.22 805 780 196.8
D 7 223 25711 126.68 805 780 196.8

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