ASTROSAT CZTI

Data Quality Report

Orbit 11317

Creation date: 2024-06-27T16:11:12.653333
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/AS1A04_137T01_9000001654_11317cztM0_level2.evt modeM0/AS1A04_137T01_9000001654_11317cztM0_level2_quad_clean.evt
Size (bytes)625,786,560105,972,480
Size596.8 MB 101.1 MB
Events in quadrant A4,595,894695,577
Events in quadrant B4,841,373688,944
Events in quadrant C3,585,977708,493
Events in quadrant D5,487,236661,002

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179923
B0187692
C0148882
D0206742

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65273144.810786%
B65273976.082427%
C65271762.696491%
D65275067.752413%

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 7782 6528 174 174 2.24% 2.67%
B 7782 6528 243 243 3.12% 3.72%
C 7782 6528 109 109 1.40% 1.67%
D 7782 6528 410 410 5.27% 6.28%

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 8 5 672456 4001.9 828 810 167.8
A 0 8 331363 1969.55 828 810 167.8
A 8 15 181134 1074.43 828 810 167.8
B 4 239 1082446 7003.52 821 803 154.4
B 3 64 328034 2118.78 821 803 154.4
B 15 204 65798 420.84 821 803 154.4
C 9 204 424369 2268.01 810 816 186.8
C 13 61 5815 26.77 810 816 186.8
C 14 234 2940 11.37 810 816 186.8
D 1 52 849793 4492.77 796 776 189.0
D 7 80 612895 3239.17 796 776 189.0
D 10 253 585885 3096.24 796 776 189.0

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