ASTROSAT CZTI

Data Quality Report

Orbit 33263

Creation date: 2024-06-27T20:46:46.624919
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/AS1A11_047T10_9000004778_33263cztM0_level2.evt modeM0/AS1A11_047T10_9000004778_33263cztM0_level2_quad_clean.evt
Size (bytes)452,799,36068,322,240
Size431.8 MB 65.2 MB
Events in quadrant A2,562,796450,929
Events in quadrant B4,262,468440,397
Events in quadrant C2,549,407431,323
Events in quadrant D4,017,953414,373

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011055832
B0169741329
C011004773
D0165601229

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01046
B01059
C01048
D01046

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0201
B0201
C0201
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4728501.057530%
B472260812.875900%
C4725661.396825%
D47151202.545069%

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 7078 4756 29 29 0.41% 0.61%
B 7078 4742 459 459 6.48% 9.68%
C 7078 4752 48 48 0.68% 1.01%
D 7078 4733 87 87 1.23% 1.84%

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 15 169 139495 1139.48 620 610 121.9
A 0 31 14237 111.8 620 610 121.9
A 13 6 9992 76.97 620 610 121.9
B 5 172 1177114 10901.53 576 564 107.9
B 0 219 504442 4668.77 576 564 107.9
B 5 200 262024 2422.6 576 564 107.9
C 0 10 186659 1389.85 584 587 133.9
C 14 67 48137 355.17 584 587 133.9
C 10 49 17625 127.26 584 587 133.9
D 8 195 904247 5740.53 588 574 157.4
D 2 250 184617 1169.12 588 574 157.4
D 12 218 158789 1005.05 588 574 157.4

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