ASTROSAT CZTI

Data Quality Report

Orbit 34306

Creation date: 2022-02-01T02:11:32.670917
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_047T07_9000004892_34306cztM0_level2.evt modeM0/AS1A11_047T07_9000004892_34306cztM0_level2_quad_clean.evt
Size (bytes)498,962,88069,001,920
Size475.8 MB 65.8 MB
Events in quadrant A2,618,315441,403
Events in quadrant B3,926,179433,067
Events in quadrant C2,817,645454,131
Events in quadrant D5,420,873420,390

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108153
B0151282
C0114182
D0195392

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4853220.453328%
B48532545.233876%
C4853230.473934%
D48534108.448382%

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 6947 4854 6 6 0.09% 0.12%
B 6947 4854 173 173 2.49% 3.56%
C 6947 4854 7 7 0.10% 0.14%
D 6947 4854 309 309 4.45% 6.37%

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 9 143 52041 401.61 641 632 128.0
A 7 16 47486 366.02 641 632 128.0
A 10 83 29804 227.89 641 632 128.0
B 5 172 608426 5124.52 633 617 118.6
B 5 31 424415 3573.1 633 617 118.6
B 0 229 160536 1348.3 633 617 118.6
C 15 214 207060 1420.69 639 646 145.3
C 0 10 65800 448.44 639 646 145.3
C 3 233 13570 88.95 639 646 145.3
D 8 195 981932 6440.11 615 603 152.4
D 12 235 864806 5671.45 615 603 152.4
D 10 118 472315 3095.68 615 603 152.4

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