ASTROSAT CZTI

Data Quality Report

Orbit 36501

Creation date: 2022-06-29T09:29:07.622353
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_049T05_9000005212_36501cztM0_level2.evt modeM0/AS1A11_049T05_9000005212_36501cztM0_level2_quad_clean.evt
Size (bytes)1,265,169,600179,144,640
Size1.2 GB 170.8 MB
Events in quadrant A7,750,8801,112,678
Events in quadrant B10,203,9321,088,375
Events in quadrant C8,129,5791,082,845
Events in quadrant D11,151,6071,037,893

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03300
B03300
C03300
D03300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0331495
B0411114
C0337254
D0440224

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15989370.231409%
B159895123.202202%
C159891150.719244%
D159896043.777597%

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 21510 15993 14 14 0.07% 0.09%
B 21510 15993 269 269 1.25% 1.68%
C 21510 15993 71 71 0.33% 0.44%
D 21510 15993 482 482 2.24% 3.01%

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 496906 1343.66 1838 1801 368.5
A 15 223 59471 156.51 1838 1801 368.5
A 9 143 38778 100.35 1838 1801 368.5
B 5 172 1503863 4372.74 1800 1749 343.5
B 0 189 637452 1850.57 1800 1749 343.5
B 5 255 407874 1182.25 1800 1749 343.5
C 15 214 681072 1670.41 1768 1780 406.7
C 0 10 506905 1242.13 1768 1780 406.7
C 0 246 12376 26.06 1768 1780 406.7
D 12 227 2493905 5867.57 1760 1713 424.7
D 13 249 539177 1265.4 1760 1713 424.7
D 2 153 513645 1205.28 1760 1713 424.7

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