ASTROSAT CZTI

Data Quality Report

Orbit 26128

Creation date: 2024-06-27T19:25:08.679035
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/AS1A09_138T04_9000003776_26128cztM0_level2.evt modeM0/AS1A09_138T04_9000003776_26128cztM0_level2_quad_clean.evt
Size (bytes)791,311,680161,170,560
Size754.7 MB 153.7 MB
Events in quadrant A5,898,5191,035,631
Events in quadrant B5,705,0601,068,496
Events in quadrant C6,021,9031,013,933
Events in quadrant D5,606,9391,014,232

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237120
B0231410
C0242160
D0231230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A108231751.616927%
B108222111.949732%
C108233072.836552%
D108231481.367458%

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 13483 10824 0 0 0.00% 0.00%
B 13483 10824 0 0 0.00% 0.00%
C 13483 10824 16 16 0.12% 0.15%
D 13483 10824 12 12 0.09% 0.11%

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 0 13 226127 773.14 1469 1441 290.6
A 13 254 15109 47.03 1469 1441 290.6
A 6 16 13353 40.99 1469 1441 290.6
B 12 111 32148 114.13 1449 1417 269.3
B 11 111 29265 103.42 1449 1417 269.3
B 14 111 26831 94.38 1449 1417 269.3
C 14 238 227554 691.4 1411 1425 327.1
C 3 233 213038 647.02 1411 1425 327.1
C 2 16 74132 222.31 1411 1425 327.1
D 12 233 52873 150.43 1452 1423 342.0
D 2 234 40222 113.44 1452 1423 342.0
D 15 145 27093 75.05 1452 1423 342.0

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