ASTROSAT CZTI

Data Quality Report

Orbit 40258

Creation date: 2024-06-27T22:14:16.239416
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/AS1A12_022T01_9000005536_40258cztM0_level2.fits modeM0/AS1A12_022T01_9000005536_40258cztM0_level2_quad_clean.evt
Size (bytes)359,948,16088,943,040
Size343.3 MB 84.8 MB
Events in quadrant A2,830,254607,432
Events in quadrant B2,419,322634,915
Events in quadrant C2,486,211613,926
Events in quadrant D5,204,757491,664

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114903
B0103312
C0102882
D0188412

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4925440.893401%
B492590.182741%
C4925140.284264%
D492578715.979695%

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 7048 4926 26 26 0.37% 0.53%
B 7048 4926 3 3 0.04% 0.06%
C 7048 4926 6 6 0.09% 0.12%
D 7048 4926 735 735 10.43% 14.92%

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 436925 3765.65 566 554 115.9
A 13 248 170728 1468.51 566 554 115.9
A 13 6 15503 129.0 566 554 115.9
B 0 245 85081 765.67 573 557 110.4
B 5 255 59035 529.73 573 557 110.4
B 0 230 17600 154.39 573 557 110.4
C 15 214 215323 1622.16 570 575 132.4
C 0 10 26362 194.79 570 575 132.4
C 9 54 9032 63.88 570 575 132.4
D 12 227 2761775 21742.52 519 505 127.0
D 13 249 245353 1927.96 519 505 127.0
D 13 171 70980 554.93 519 505 127.0

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