ASTROSAT CZTI

Data Quality Report

Orbit 15401

Creation date: 2024-06-27T17:08:01.701300
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/AS1G08_072T01_9000002272_15401cztM0_level2.evt modeM0/AS1G08_072T01_9000002272_15401cztM0_level2_quad_clean.evt
Size (bytes)615,902,400106,580,160
Size587.4 MB 101.6 MB
Events in quadrant A3,084,020733,527
Events in quadrant B3,873,762732,701
Events in quadrant C3,129,605724,198
Events in quadrant D8,161,926620,813

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128751
B0153840
C0130500
D0283900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59641141.911469%
B59642203.688799%
C5964821.374916%
D5964175029.342723%

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 7245 5965 5 5 0.07% 0.08%
B 7245 5965 83 83 1.15% 1.39%
C 7245 5966 1 1 0.01% 0.02%
D 7245 5965 1475 1475 20.36% 24.73%

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 44572 279.88 780 766 156.5
A 9 143 17810 108.89 780 766 156.5
A 12 96 9310 54.59 780 766 156.5
B 10 16 429376 2974.7 768 754 144.1
B 0 197 136773 943.99 768 754 144.1
B 8 3 74737 513.45 768 754 144.1
C 3 233 131236 777.2 738 744 167.9
C 7 247 68603 404.16 738 744 167.9
C 3 9 47414 277.96 738 744 167.9
D 7 223 2488601 15603.99 656 637 159.4
D 13 122 1457872 9139.47 656 637 159.4
D 9 68 1052691 6598.26 656 637 159.4

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