ASTROSAT CZTI

Data Quality Report

Orbit 38724

Creation date: 2024-06-27T21:55:37.225478
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_054T01_9000005392_38724cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38724cztM0_level2_quad_clean.evt
Size (bytes)482,950,08086,967,360
Size460.6 MB 82.9 MB
Events in quadrant A3,153,537617,286
Events in quadrant B2,702,094635,542
Events in quadrant C2,544,341599,442
Events in quadrant D9,075,878418,942

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125263
B0113752
C0106762
D0305772

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5171791.527751%
B5171611.179656%
C517170.135370%
D5171155630.090892%

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 7293 5172 66 66 0.90% 1.28%
B 7293 5172 34 34 0.47% 0.66%
C 7293 5172 6 6 0.08% 0.12%
D 7293 5172 1465 1465 20.09% 28.33%

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 394408 3282.39 592 580 120.0
A 9 143 252168 2096.88 592 580 120.0
A 0 8 111164 921.67 592 580 120.0
B 5 184 216332 1921.55 587 572 112.3
B 4 171 138308 1226.67 587 572 112.3
B 0 183 15192 130.21 587 572 112.3
C 15 214 215951 1608.86 575 579 133.9
C 15 208 54018 399.2 575 579 133.9
C 14 254 20181 146.43 575 579 133.9
D 2 16 5869090 46118.92 520 507 127.2
D 12 235 550418 4321.54 520 507 127.2
D 12 227 345280 2709.44 520 507 127.2

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