ASTROSAT CZTI

Data Quality Report

Orbit 17714

Creation date: 2024-06-27T17:39:56.114671
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/AS1T03_042T01_9000002630_17714cztM0_level2.evt modeM0/AS1T03_042T01_9000002630_17714cztM0_level2_quad_clean.evt
Size (bytes)741,237,12085,832,640
Size706.9 MB 81.9 MB
Events in quadrant A3,589,270578,313
Events in quadrant B3,169,510605,650
Events in quadrant C3,168,049582,780
Events in quadrant D12,092,104388,470

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148762
B0136962
C0136142
D0403612

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63412053.232929%
B6342420.662252%
C6342651.024913%
D6342360456.827499%

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 7546 6342 156 156 2.07% 2.46%
B 7547 6343 2 2 0.03% 0.03%
C 7547 6343 0 0 0.00% 0.00%
D 7547 6342 3218 3218 42.64% 50.74%

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 15 174 570428 3639.15 781 764 156.5
A 4 2 12491 74.91 781 764 156.5
A 0 226 6918 39.31 781 764 156.5
B 0 189 30554 199.47 794 773 149.3
B 10 245 20786 134.05 794 773 149.3
B 12 111 17796 114.02 794 773 149.3
C 14 238 120842 667.52 769 773 179.9
C 5 218 38995 212.49 769 773 179.9
C 13 61 5459 26.05 769 773 179.9
D 7 238 9789788 72853.42 548 530 134.4
D 13 232 163403 1212.13 548 530 134.4
D 1 52 36154 265.12 548 530 134.4

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