ASTROSAT CZTI

Data Quality Report

Orbit 36472

Creation date: 2022-06-29T16:54:32.695077
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_049T02_9000005206_36472cztM0_level2.evt modeM0/AS1A11_049T02_9000005206_36472cztM0_level2_quad_clean.evt
Size (bytes)1,205,231,040175,881,600
Size1.1 GB 167.7 MB
Events in quadrant A7,592,0661,090,369
Events in quadrant B9,722,3661,057,168
Events in quadrant C8,630,5461,062,869
Events in quadrant D9,479,1971,016,783

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0326325
B0393878
C0353094
D0392544

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03260
B03260
C03260
D03260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15936130.081576%
B159346133.847119%
C159361961.229920%
D159364102.572791%

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 21426 15940 1 1 0.00% 0.01%
B 21426 15939 349 349 1.63% 2.19%
C 21426 15940 154 154 0.72% 0.97%
D 21426 15940 287 287 1.34% 1.80%

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 480776 1313.19 1825 1790 364.8
A 9 143 30990 80.05 1825 1790 364.8
A 13 254 27492 70.46 1825 1790 364.8
B 5 172 1618189 4751.96 1779 1731 340.2
B 5 255 410159 1200.67 1779 1731 340.2
B 0 190 175611 511.16 1779 1731 340.2
C 15 214 682631 1684.84 1750 1760 404.1
C 0 207 645573 1593.14 1750 1760 404.1
C 0 10 345163 849.76 1750 1760 404.1
D 13 249 704269 1640.98 1752 1701 428.1
D 13 171 557424 1297.99 1752 1701 428.1
D 10 118 399981 930.26 1752 1701 428.1

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