ASTROSAT CZTI

Data Quality Report

Orbit 35088

Creation date: 2022-03-28T14:59:24.675414
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/AS1T05_015T01_9000005026_35088cztM0_level2.evt modeM0/AS1T05_015T01_9000005026_35088cztM0_level2_quad_clean.evt
Size (bytes)473,520,96065,468,160
Size451.6 MB 62.4 MB
Events in quadrant A2,879,203411,553
Events in quadrant B3,819,801410,018
Events in quadrant C3,147,404413,020
Events in quadrant D4,146,737388,171

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118073
B0147702
C0126092
D0160652

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5132150.292284%
B51322134.150429%
C5132601.169135%
D51321212.357755%

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 7224 5133 2 2 0.03% 0.04%
B 7224 5133 126 126 1.74% 2.45%
C 7224 5133 37 37 0.51% 0.72%
D 7224 5133 81 81 1.12% 1.58%

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 10 83 82586 600.64 698 688 136.4
A 9 143 54386 393.82 698 688 136.4
A 15 174 18458 130.33 698 688 136.4
B 5 172 760421 5952.31 687 672 127.6
B 5 255 110579 861.07 687 672 127.6
B 4 232 79876 620.53 687 672 127.6
C 15 214 216042 1394.66 682 691 154.4
C 0 10 137541 886.27 682 691 154.4
C 10 49 87711 563.56 682 691 154.4
D 8 195 1007465 6186.48 675 658 162.7
D 13 249 251784 1543.08 675 658 162.7
D 12 233 60008 364.68 675 658 162.7

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