ASTROSAT CZTI

Data Quality Report

Orbit 37714

Creation date: 2024-06-27T21:43:31.841085
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/AS1A11_106T02_9000005344_37714cztM0_level2.evt modeM0/AS1A11_106T02_9000005344_37714cztM0_level2_quad_clean.evt
Size (bytes)541,653,12076,348,800
Size516.6 MB 72.8 MB
Events in quadrant A6,365,429468,768
Events in quadrant B2,837,211496,636
Events in quadrant C2,598,154505,662
Events in quadrant D4,239,019464,325

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225492
B0122321
C0111691
D0164241

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5379109120.282580%
B5379791.468674%
C5379120.223090%
D53793827.101692%

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 6691 5378 982 982 14.68% 18.26%
B 6691 5378 49 49 0.73% 0.91%
C 6691 5378 8 8 0.12% 0.15%
D 6691 5378 411 411 6.14% 7.64%

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 3806313 33640.94 562 551 113.1
A 10 83 238300 2101.58 562 551 113.1
A 9 143 111072 976.95 562 551 113.1
B 5 255 166786 1457.83 585 569 114.0
B 5 200 164953 1441.75 585 569 114.0
B 5 172 63681 553.53 585 569 114.0
C 15 214 238798 1767.12 578 582 134.8
C 0 10 48513 355.56 578 582 134.8
C 14 254 47829 350.49 578 582 134.8
D 2 250 867349 6327.1 563 547 137.0
D 12 227 384214 2800.52 563 547 137.0
D 5 222 271337 1976.59 563 547 137.0

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