ASTROSAT CZTI

Data Quality Report

Orbit 08938

Creation date: 2024-06-27T15:39:12.503256
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/AS1A03_092T01_9000001240_08938cztM0_level2.evt modeM0/AS1A03_092T01_9000001240_08938cztM0_level2_quad_clean.evt
Size (bytes)851,198,400159,606,720
Size811.8 MB 152.2 MB
Events in quadrant A7,150,1811,005,005
Events in quadrant B5,815,3301,019,863
Events in quadrant C5,420,764994,426
Events in quadrant D6,559,007963,703

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02540
B02540
C02540
D02540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0293794
B0254823
C0249993
D0282783

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A123021271.032352%
B12302570.463339%
C12302240.195090%
D123022742.227280%

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 13962 12305 43 43 0.31% 0.35%
B 13962 12305 5 5 0.04% 0.04%
C 13962 12305 4 4 0.03% 0.03%
D 13962 12305 246 246 1.76% 2.00%

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 8 5 1506552 5182.81 1425 1394 290.4
A 5 16 136627 465.66 1425 1394 290.4
A 0 226 13203 40.66 1425 1394 290.4
B 0 214 37686 132.78 1435 1401 273.3
B 0 219 37541 132.25 1435 1401 273.3
B 6 51 37514 132.15 1435 1401 273.3
C 14 234 31186 93.78 1373 1381 317.8
C 1 3 16227 46.71 1373 1381 317.8
C 8 128 12817 35.98 1373 1381 317.8
D 1 52 494153 1345.42 1360 1331 366.3
D 12 233 399669 1087.48 1360 1331 366.3
D 7 71 152837 413.62 1360 1331 366.3

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