ASTROSAT CZTI

Data Quality Report

Orbit 55368

Creation date: 2025-12-22T16:49:31.803495
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/AS1A14_009T01_9000006534_55368cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55368cztM0_level2_quad_clean.evt
Size (bytes)217,941,12050,356,800
Size207.8 MB 48.0 MB
Events in quadrant A2,131,059322,291
Events in quadrant B1,538,731350,935
Events in quadrant C2,561,998302,949
Events in quadrant D1,561,396300,722

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0883355
B0731641
C01022767
D0729044

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1139748625389608139745350909998
B1-1-1
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A34981333.802173%
B3500371.057143%
C35022116.025128%
D3507130.370687%

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 6381 3507 88 88 1.38% 2.51%
B 6381 3509 13 13 0.20% 0.37%
C 6381 3510 191 191 2.99% 5.44%
D 6381 3512 7 7 0.11% 0.20%

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 4 159 368586 4044.9 360 350 91.0
A 0 8 185250 2031.04 360 350 91.0
A 3 78 84700 926.55 360 350 91.0
B 10 247 58728 742.02 359 346 78.7
B 0 199 21852 273.33 359 346 78.7
B 5 185 11233 138.37 359 346 78.7
C 9 38 615817 6368.72 348 343 96.6
C 13 3 341933 3534.66 348 343 96.6
C 12 250 142333 1469.26 348 343 96.6
D 11 129 38129 374.18 355 339 101.0
D 5 173 28411 277.95 355 339 101.0
D 3 12 25439 248.53 355 339 101.0

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