ASTROSAT CZTI

Data Quality Report

Orbit 19997

Creation date: 2024-06-27T18:09:51.969484
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/AS1A06_002T02_9000002982_19997cztM0_level2.evt modeM0/AS1A06_002T02_9000002982_19997cztM0_level2_quad_clean.evt
Size (bytes)910,221,120179,789,760
Size868.1 MB 171.5 MB
Events in quadrant A6,348,9451,149,626
Events in quadrant B6,501,4501,162,718
Events in quadrant C7,162,2381,106,546
Events in quadrant D6,653,6581,108,018

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02720
B02720
C02720
D02720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0278023
B0281253
C0299713
D0291713

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A132891240.933103%
B132901701.279157%
C132903692.776524%
D132901701.279157%

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 14973 13290 22 22 0.15% 0.17%
B 14975 13292 29 29 0.19% 0.22%
C 14975 13292 70 70 0.47% 0.53%
D 14975 13293 108 108 0.72% 0.81%

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 14 238 107260 330.03 1588 1551 320.3
A 14 254 72262 220.77 1588 1551 320.3
A 5 16 44667 134.61 1588 1551 320.3
B 7 220 98117 319.01 1584 1543 302.7
B 15 33 63494 204.64 1584 1543 302.7
B 12 111 37897 120.09 1584 1543 302.7
C 3 233 797843 2228.05 1513 1520 357.4
C 14 238 234779 652.64 1513 1520 357.4
C 0 207 219125 608.84 1513 1520 357.4
D 12 218 341273 904.19 1541 1495 375.8
D 1 52 272588 721.41 1541 1495 375.8
D 7 96 107144 281.14 1541 1495 375.8

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