ASTROSAT CZTI

Data Quality Report

Orbit 46976

Creation date: 2024-06-27T23:30:10.602007
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/AS1A13_071T07_9000006290_46976cztM0_level2.fits modeM0/AS1A13_071T07_9000006290_46976cztM0_level2_quad_clean.evt
Size (bytes)1,021,248,000202,057,920
Size973.9 MB 192.7 MB
Events in quadrant A12,653,4551,340,599
Events in quadrant B10,010,7821,349,148
Events in quadrant C5,858,1311,322,003
Events in quadrant D8,272,6191,203,367

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02680
B02680
C02680
D02680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0463372
B0387702
C0274422
D0339502

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A130534563.493450%
B130546935.308718%
C130541120.857975%
D130544793.669373%

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 13863 13056 104 104 0.75% 0.80%
B 13864 13057 169 169 1.22% 1.29%
C 13864 13057 41 41 0.30% 0.31%
D 13864 13057 359 359 2.59% 2.75%

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 6623083 22793.77 1412 1381 290.5
A 14 248 423952 1454.61 1412 1381 290.5
A 9 191 86889 294.34 1412 1381 290.5
B 3 112 3700393 13469.96 1402 1356 274.6
B 4 171 216726 784.27 1402 1356 274.6
B 5 172 153240 553.08 1402 1356 274.6
C 14 254 234666 716.48 1391 1396 325.6
C 15 208 175862 535.86 1391 1396 325.6
C 12 250 15400 43.01 1391 1396 325.6
D 1 52 1414412 4105.52 1374 1330 344.2
D 13 249 1031973 2994.39 1374 1330 344.2
D 2 249 104046 298.43 1374 1330 344.2

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