ASTROSAT CZTI

Data Quality Report

Orbit 48534

Creation date: 2024-09-18T10:50:04.257711
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_037T01_9000006436_48534cztM0_level2.fits modeM0/AS1A13_037T01_9000006436_48534cztM0_level2_quad_clean.evt
Size (bytes)595,428,48088,171,200
Size567.8 MB 84.1 MB
Events in quadrant A6,910,759614,159
Events in quadrant B2,852,549677,175
Events in quadrant C2,539,841648,343
Events in quadrant D9,267,592306,785

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025314385
B013031171
C012448162
D032270371

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0191

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01262
B01260
C01262
D01262

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60334046.696503%
B6064701.154354%
C6063190.313376%
D6048293248.478836%

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 7482 6101 254 254 3.39% 4.16%
B 7482 6127 19 19 0.25% 0.31%
C 7481 6123 0 0 0.00% 0.00%
D 7481 6120 2502 2502 33.44% 40.88%

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 3811878 28416.62 642 628 134.1
A 13 248 293481 2183.51 642 628 134.1
A 12 189 203141 1509.93 642 628 134.1
B 5 255 118597 913.11 659 637 129.2
B 4 248 51048 390.23 659 637 129.2
B 0 183 37869 288.21 659 637 129.2
C 14 254 11927 74.28 647 649 151.8
C 13 61 4393 24.66 647 649 151.8
C 3 233 2966 15.26 647 649 151.8
D 2 165 7344308 62067.88 473 458 118.3
D 2 249 53998 452.5 473 458 118.3
D 7 96 30415 253.19 473 458 118.3

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