ASTROSAT CZTI

Data Quality Report

Orbit 54381

Creation date: 2025-10-17T09:16:34.519459
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_126T19_9000006518_54381cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54381cztM0_level2_quad_clean.evt
Size (bytes)620,665,92086,100,480
Size591.9 MB 82.1 MB
Events in quadrant A2,871,443617,455
Events in quadrant B9,094,805459,001
Events in quadrant C5,449,769532,404
Events in quadrant D5,049,860540,143

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136201
B0315063
C0210901
D0196491

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6561560.853528%
B6560229234.939024%
C656080912.332317%
D65603355.106707%

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 7491 6562 30 30 0.40% 0.46%
B 7490 6560 1824 1824 24.35% 27.80%
C 7490 6561 730 730 9.75% 11.13%
D 7490 6561 294 294 3.93% 4.48%

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 0 8 90322 529.16 691 674 169.4
A 8 246 46925 273.0 691 674 169.4
A 3 62 26323 151.4 691 674 169.4
B 10 14 6445546 51041.46 583 562 126.3
B 7 0 92993 732.01 583 562 126.3
B 0 213 61353 481.44 583 562 126.3
C 1 241 1836344 10198.28 653 648 180.0
C 14 254 303582 1682.96 653 648 180.0
C 13 3 252706 1400.32 653 648 180.0
D 8 176 1999840 10660.48 661 631 187.5
D 3 12 112481 596.42 661 631 187.5
D 12 3 89433 473.52 661 631 187.5

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