ASTROSAT CZTI

Data Quality Report

Orbit 51236

Creation date: 2025-03-19T11:09:14.529768
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/AS1C07_001T01_9000006454_51236cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51236cztM0_level2_quad_clean.evt
Size (bytes)527,388,48088,801,920
Size503.0 MB 84.7 MB
Events in quadrant A5,929,563539,536
Events in quadrant B4,543,145620,376
Events in quadrant C4,613,781550,359
Events in quadrant D3,934,460527,344

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221921
B0180531
C0183471
D0166891

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A645666410.285006%
B64574326.690414%
C64574987.712560%
D64572523.902741%

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 7216 6457 481 481 6.67% 7.45%
B 7217 6458 267 267 3.70% 4.13%
C 7217 6458 422 422 5.85% 6.53%
D 7217 6458 184 184 2.55% 2.85%

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 8 26 1247727 7988.19 627 614 156.1
A 12 3 764130 4890.58 627 614 156.1
A 9 160 550850 3524.45 627 614 156.1
B 5 255 477048 3510.3 644 625 135.7
B 5 185 464263 3416.1 644 625 135.7
B 7 252 282480 2076.72 644 625 135.7
C 1 60 752950 4435.26 619 614 169.6
C 4 12 591721 3484.76 619 614 169.6
C 12 247 156853 921.08 619 614 169.6
D 2 62 440265 2512.92 618 597 175.0
D 10 172 356321 2033.14 618 597 175.0
D 2 207 281410 1604.98 618 597 175.0

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