ASTROSAT CZTI

Data Quality Report

Orbit 43679

Creation date: 2024-06-27T22:54:26.450491
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/AS1A12_018T01_9000005896_43679cztM0_level2.fits modeM0/AS1A12_018T01_9000005896_43679cztM0_level2_quad_clean.evt
Size (bytes)935,737,92092,073,600
Size892.4 MB 87.8 MB
Events in quadrant A10,737,764673,673
Events in quadrant B4,128,291698,140
Events in quadrant C11,253,524459,402
Events in quadrant D8,048,717527,650

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0361321
B0164721
C0375791
D0281231

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6101127620.914604%
B61011462.393050%
C6101346556.793968%
D6101160026.225209%

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 6976 6102 798 798 11.44% 13.08%
B 6976 6102 47 47 0.67% 0.77%
C 6976 6102 2827 2827 40.52% 46.33%
D 6976 6102 1411 1411 20.23% 23.12%

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 15 222 7105783 53850.79 654 641 131.9
A 10 83 806378 6106.79 654 641 131.9
A 15 223 192215 1451.96 654 641 131.9
B 4 206 938088 7196.81 677 658 130.3
B 4 171 168341 1287.33 677 658 130.3
B 5 235 123961 946.62 677 658 130.3
C 15 142 6963928 62305.36 475 476 111.8
C 15 158 1582766 14157.51 475 476 111.8
C 15 157 369476 3301.62 475 476 111.8
D 2 249 1472245 9164.27 578 563 160.6
D 13 187 1204329 7495.94 578 563 160.6
D 7 80 570498 3549.03 578 563 160.6

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