ASTROSAT CZTI

Data Quality Report

Orbit 15792

Creation date: 2024-06-27T17:13:28.356756
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_15792cztM0_level2.evt modeM0/AS1A04_100T01_9000002336_15792cztM0_level2_quad_clean.evt
Size (bytes)471,726,720112,296,960
Size449.9 MB 107.1 MB
Events in quadrant A3,415,748726,894
Events in quadrant B3,992,111747,082
Events in quadrant C3,372,559746,355
Events in quadrant D3,057,833720,804

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145673
B0162762
C0143832
D0137612

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6597831.258148%
B65972083.152948%
C65971021.546157%
D6597240.363802%

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 7883 6599 37 37 0.47% 0.56%
B 7883 6599 91 91 1.15% 1.38%
C 7883 6599 0 0 0.00% 0.00%
D 7883 6599 2 2 0.03% 0.03%

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 15 239 182806 1122.1 809 792 162.2
A 15 174 63959 389.42 809 792 162.2
A 14 254 58129 353.48 809 792 162.2
B 5 65 452492 2977.3 815 798 151.7
B 10 245 148934 976.43 815 798 151.7
B 4 173 55887 363.11 815 798 151.7
C 14 238 122965 663.74 795 802 184.1
C 7 247 122065 658.85 795 802 184.1
C 3 233 10483 52.6 795 802 184.1
D 2 234 26509 122.25 786 771 210.5
D 2 152 12844 57.34 786 771 210.5
D 2 120 11621 51.53 786 771 210.5

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