ASTROSAT CZTI

Data Quality Report

Orbit 48518

Creation date: 2024-09-17T08:30:32.888539
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_9000006436_48518cztM0_level2.fits modeM0/AS1A13_037T01_9000006436_48518cztM0_level2_quad_clean.evt
Size (bytes)439,940,160103,772,160
Size419.6 MB 99.0 MB
Events in quadrant A6,913,907668,429
Events in quadrant B3,376,160715,167
Events in quadrant C2,676,427691,105
Events in quadrant D2,818,893618,831

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02497614
B0147543
C0130141
D0135275

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64332664.134929%
B64351241.926962%
C6436100.155376%
D6434400.621697%

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 6437 108 108 1.43% 1.68%
B 7546 6437 57 57 0.76% 0.89%
C 7546 6437 0 0 0.00% 0.00%
D 7546 6437 26 26 0.34% 0.40%

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 3910605 27505.98 680 666 142.1
A 0 31 195750 1372.39 680 666 142.1
A 13 248 128532 899.52 680 666 142.1
B 12 16 367477 2722.24 691 671 134.7
B 5 255 214610 1587.74 691 671 134.7
B 8 234 34015 247.46 691 671 134.7
C 3 233 7306 40.89 682 687 161.9
C 0 2 4671 24.61 682 687 161.9
C 13 61 4605 24.21 682 687 161.9
D 2 249 132118 771.9 672 650 170.3
D 2 165 80009 465.95 672 650 170.3
D 2 234 28884 165.77 672 650 170.3

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