ASTROSAT CZTI

Data Quality Report

Orbit 36476

Creation date: 2022-06-28T13:58:02.097868
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_36476cztM0_level2.evt modeM0/AS1A11_049T02_9000005206_36476cztM0_level2_quad_clean.evt
Size (bytes)242,582,40050,290,560
Size231.3 MB 48.0 MB
Events in quadrant A1,636,548329,041
Events in quadrant B1,696,673332,572
Events in quadrant C1,819,124324,402
Events in quadrant D1,973,755307,697

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A067491
B069091
C073031
D078831

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A322230.093110%
B3222200.620732%
C3222351.086282%
D3222952.948479%

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 3222 3222 0 0 0.00% 0.00%
B 3222 3222 11 11 0.34% 0.34%
C 3222 3222 21 21 0.65% 0.65%
D 3222 3222 70 70 2.17% 2.17%

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 106675 1316.71 395 388 80.7
A 13 254 5541 63.84 395 388 80.7
A 3 137 3882 43.28 395 388 80.7
B 5 255 47369 627.96 386 376 74.8
B 15 85 43764 579.79 386 376 74.8
B 0 189 38349 507.43 386 376 74.8
C 0 10 192411 2191.88 377 379 87.6
C 15 214 138648 1578.22 377 379 87.6
C 6 255 10135 111.35 377 379 87.6
D 13 249 360455 3874.83 379 369 92.9
D 2 153 43315 462.13 379 369 92.9
D 10 199 40442 431.22 379 369 92.9

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