ASTROSAT CZTI

Data Quality Report

Orbit 41915

Creation date: 2024-06-27T22:34:26.684725
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_118T01_9000005718_41915cztM0_level2.fits modeM0/AS1T05_118T01_9000005718_41915cztM0_level2_quad_clean.evt
Size (bytes)744,762,24076,055,040
Size710.3 MB 72.5 MB
Events in quadrant A4,529,743605,147
Events in quadrant B3,172,551644,502
Events in quadrant C3,119,858623,536
Events in quadrant D16,284,25313,515

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172861
B0135951
C0130231
D0519551

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59514327.259284%
B59511011.697194%
C59511071.798017%
D5952584098.118280%

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 7264 5952 356 356 4.90% 5.98%
B 7264 5952 78 78 1.07% 1.31%
C 7264 5952 108 108 1.49% 1.81%
D 7265 5953 5644 5644 77.69% 94.81%

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 24 1454959 11413.99 617 604 127.4
A 10 83 554545 4347.41 617 604 127.4
A 7 3 91822 715.89 617 604 127.4
B 5 32 294266 2432.16 628 610 120.7
B 0 156 124688 1027.66 628 610 120.7
B 5 255 99725 820.91 628 610 120.7
C 0 10 341298 2349.21 619 623 145.0
C 15 214 237035 1630.24 619 623 145.0
C 15 111 88252 604.27 619 623 145.0
D 12 79 15265860 356536.53 167 161 42.8
D 5 222 133250 3108.35 167 161 42.8
D 13 249 111260 2594.76 167 161 42.8

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