ASTROSAT CZTI

Data Quality Report

Orbit 31105

Creation date: 2024-06-27T20:23:25.078402
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/AS1A10_109T01_9000004492_31105cztM0_level2.evt modeM0/AS1A10_109T01_9000004492_31105cztM0_level2_quad_clean.evt
Size (bytes)439,692,48053,591,040
Size419.3 MB 51.1 MB
Events in quadrant A2,917,037332,637
Events in quadrant B3,982,297307,324
Events in quadrant C3,023,606323,938
Events in quadrant D3,057,201311,448

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148822912
B0197784772
C0152842960
D0159833316

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013220
B013224
C013222
D013216

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49381232.490887%
B47991783.709106%
C49781873.756529%
D4910901.832994%

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 7617 5175 34 34 0.45% 0.66%
B 7616 5039 1 1 0.01% 0.02%
C 7616 5217 20 20 0.26% 0.38%
D 7616 5152 12 12 0.16% 0.23%

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 13 170 83855 573.12 735 724 145.0
A 13 254 8852 56.04 735 724 145.0
A 3 137 6969 43.05 735 724 145.0
B 6 159 1208159 9158.44 696 681 131.8
B 0 183 22411 164.82 696 681 131.8
B 10 247 15935 115.7 696 681 131.8
C 0 10 156808 965.54 696 701 161.7
C 14 238 112603 692.12 696 701 161.7
C 10 22 18523 110.23 696 701 161.7
D 8 195 319801 1955.3 705 691 163.2
D 2 250 32763 196.52 705 691 163.2
D 13 174 23601 140.38 705 691 163.2

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