ASTROSAT CZTI

Data Quality Report

Orbit 03751

Creation date: 2024-06-27T14:33:13.765908
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/AS1G05_248T01_9000000486_03751cztM0_level2.evt modeM0/AS1G05_248T01_9000000486_03751cztM0_level2_quad_clean.evt
Size (bytes)531,959,04084,971,520
Size507.3 MB 81.0 MB
Events in quadrant A5,125,103532,829
Events in quadrant B3,836,602537,921
Events in quadrant C2,903,396530,189
Events in quadrant D3,796,975511,647

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0195122
B0156871
C0134381
D0159661

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A660377011.661366%
B66031191.802211%
C6603600.908678%
D66031762.665455%

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 7433 6605 584 584 7.86% 8.84%
B 7433 6605 29 29 0.39% 0.44%
C 7433 6604 0 0 0.00% 0.00%
D 7433 6604 94 94 1.26% 1.42%

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 0 118 1416460 9591.9 716 699 147.6
A 13 251 568578 3847.43 716 699 147.6
A 8 15 156891 1058.21 716 699 147.6
B 15 204 360503 2409.81 764 745 149.3
B 0 173 188274 1256.15 764 745 149.3
B 4 81 73114 484.76 764 745 149.3
C 13 61 6281 32.04 739 742 172.9
C 1 16 5242 26.03 739 742 172.9
C 12 4 4217 20.1 739 742 172.9
D 1 20 550583 3068.48 737 716 179.2
D 13 239 134208 744.94 737 716 179.2
D 13 249 93603 518.35 737 716 179.2

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
Veto Counter