ASTROSAT CZTI

Data Quality Report

Orbit 35444

Creation date: 2022-04-20T22:58:00.533986
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_097T17_9000005074_35444cztM0_level2.evt modeM0/AS1A11_097T17_9000005074_35444cztM0_level2_quad_clean.evt
Size (bytes)1,608,943,680236,226,240
Size1.5 GB 225.3 MB
Events in quadrant A7,508,7661,558,387
Events in quadrant B18,853,1911,483,195
Events in quadrant C11,348,2351,514,035
Events in quadrant D9,934,5151,488,939

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0329595
B06744117
C04383817
D0400537

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03300
B03300
C03300
D03300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16085240.149207%
B16083277917.279115%
C1607910046.244169%
D160834883.034260%

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 21577 16089 0 0 0.00% 0.00%
B 21577 16089 1740 1740 8.06% 10.81%
C 21577 16088 721 721 3.34% 4.48%
D 21577 16088 374 374 1.73% 2.32%

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 301618 811.36 1846 1805 369.5
A 13 6 29987 76.27 1846 1805 369.5
A 8 6 29743 75.61 1846 1805 369.5
B 4 251 10445045 31049.35 1751 1699 336.3
B 5 236 852114 2528.39 1751 1699 336.3
B 5 172 326561 965.85 1751 1699 336.3
C 4 254 2463044 6049.36 1755 1768 406.9
C 0 10 862445 2115.38 1755 1768 406.9
C 15 214 637772 1563.18 1755 1768 406.9
D 13 249 802968 1841.73 1788 1739 435.0
D 12 6 641523 1470.63 1788 1739 435.0
D 8 195 486279 1113.78 1788 1739 435.0

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