ASTROSAT CZTI

Data Quality Report

Orbit 46716

Creation date: 2024-06-27T23:26:46.387475
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/AS1A13_037T01_9000006256_46716cztM0_level2.fits modeM0/AS1A13_037T01_9000006256_46716cztM0_level2_quad_clean.evt
Size (bytes)505,906,560109,031,040
Size482.5 MB 104.0 MB
Events in quadrant A6,792,241734,988
Events in quadrant B3,554,480746,864
Events in quadrant C3,253,827707,332
Events in quadrant D4,597,304636,907

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0252541
B0151641
C0145301
D0183431

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68202273.328446%
B68201522.228739%
C68201412.067449%
D68214546.655916%

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 7680 6820 11 11 0.14% 0.16%
B 7680 6820 28 28 0.36% 0.41%
C 7680 6820 50 50 0.65% 0.73%
D 7681 6821 301 301 3.92% 4.41%

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 3693568 22853.49 769 752 161.6
A 9 191 96929 595.2 769 752 161.6
A 13 254 12375 71.93 769 752 161.6
B 4 171 175606 1154.32 763 739 151.5
B 3 112 85332 558.41 763 739 151.5
B 0 198 84572 553.39 763 739 151.5
C 12 2 147754 829.87 749 753 177.1
C 5 250 53431 297.39 749 753 177.1
C 3 233 41585 230.51 749 753 177.1
D 1 52 1099614 5904.03 737 715 186.1
D 13 249 200010 1070.75 737 715 186.1
D 14 34 139367 744.93 737 715 186.1

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