ASTROSAT CZTI

Data Quality Report

Orbit 46295

Creation date: 2024-06-27T23:21:23.737221
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_072T02_9000006194_46295cztM0_level2.fits modeM0/AS1A13_072T02_9000006194_46295cztM0_level2_quad_clean.evt
Size (bytes)485,300,160112,492,800
Size462.8 MB 107.3 MB
Events in quadrant A6,255,391733,974
Events in quadrant B4,253,192756,646
Events in quadrant C3,236,305738,043
Events in quadrant D3,663,105678,237

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230532
B0172512
C0149312
D0161862

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71652092.916957%
B71662263.153782%
C7166741.032654%
D71661241.730394%

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 8520 7167 10 10 0.12% 0.14%
B 8521 7167 54 54 0.63% 0.75%
C 8521 7167 9 9 0.11% 0.13%
D 8521 7167 63 63 0.74% 0.88%

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 3046391 18276.35 802 784 166.6
A 15 223 50342 297.39 802 784 166.6
A 2 79 27568 160.73 802 784 166.6
B 3 112 637263 3924.44 800 774 162.2
B 4 171 267053 1641.81 800 774 162.2
B 5 255 85695 523.6 800 774 162.2
C 12 2 88242 463.2 792 797 188.8
C 1 3 41794 217.16 792 797 188.8
C 11 16 15672 78.79 792 797 188.8
D 13 249 361923 1805.41 785 762 200.0
D 1 52 281176 1401.76 785 762 200.0
D 2 234 29594 144.13 785 762 200.0

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