ASTROSAT CZTI

Data Quality Report

Orbit 00235

Creation date: 2024-06-27T13:58:15.756487
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/AS1P01_123T01_9000000024_00235cztM0_level2.evt modeM0/AS1P01_123T01_9000000024_00235cztM0_level2_quad_clean.evt
Size (bytes)821,439,36077,232,960
Size783.4 MB 73.7 MB
Events in quadrant A5,986,202486,343
Events in quadrant B6,263,109493,454
Events in quadrant C5,508,652506,141
Events in quadrant D6,763,591478,419

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216142
B0223901
C0201991
D0239221

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A535150.093440%
B535170.130817%
C535110.018688%
D53511071.999626%

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 7087 5352 91 91 1.28% 1.70%
B 7087 5352 119 119 1.68% 2.22%
C 7087 5352 28 28 0.40% 0.52%
D 7087 5352 434 434 6.12% 8.11%

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 12 189 13444 34.67 1536 1520 343.9
A 15 17 11875 30.11 1536 1520 343.9
A 12 150 9092 22.02 1536 1520 343.9
B 7 220 110421 300.36 1551 1563 362.4
B 5 46 87507 237.13 1551 1563 362.4
B 0 85 86710 234.93 1551 1563 362.4
C 4 253 9136 19.78 1396 1443 388.8
C 10 21 9028 19.51 1396 1443 388.8
C 9 68 7903 16.61 1396 1443 388.8
D 1 4 1225248 3092.34 1359 1384 395.8
D 10 154 103853 258.91 1359 1384 395.8
D 1 5 82248 204.32 1359 1384 395.8

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