ASTROSAT CZTI

Data Quality Report

Orbit 46358

Creation date: 2024-06-27T23:22:10.851451
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_070T05_9000006198_46358cztM0_level2.fits modeM0/AS1A13_070T05_9000006198_46358cztM0_level2_quad_clean.evt
Size (bytes)601,908,48095,840,640
Size574.0 MB 91.4 MB
Events in quadrant A6,982,199639,420
Events in quadrant B3,332,889710,833
Events in quadrant C3,191,782667,039
Events in quadrant D8,320,760475,368

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0249021
B0136571
C0135711
D0288021

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A584970512.053342%
B58502013.435897%
C58501873.196581%
D5850161727.641026%

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 7004 5850 387 387 5.53% 6.62%
B 7004 5850 50 50 0.71% 0.85%
C 7004 5849 77 77 1.10% 1.32%
D 7005 5850 1253 1253 17.89% 21.42%

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 2722175 19501.83 669 656 139.6
A 15 223 921312 6597.23 669 656 139.6
A 13 248 662484 4742.52 669 656 139.6
B 5 255 233625 1723.54 691 672 135.2
B 5 172 181831 1340.33 691 672 135.2
B 15 201 57022 416.91 691 672 135.2
C 14 254 527002 3356.43 674 680 156.8
C 12 2 19853 122.27 674 680 156.8
C 11 16 7151 41.27 674 680 156.8
D 5 235 3884516 24580.28 623 602 158.0
D 1 52 1395277 8826.53 623 602 158.0
D 12 233 294406 1859.41 623 602 158.0

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