ASTROSAT CZTI

Data Quality Report

Orbit 54714

Creation date: 2025-11-10T16:25:34.899628
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_103T01_9000006524_54714cztM0_level2.fits modeM0/AS1A14_103T01_9000006524_54714cztM0_level2_quad_clean.evt
Size (bytes)235,474,56044,714,880
Size224.6 MB 42.6 MB
Events in quadrant A1,721,560308,702
Events in quadrant B1,975,103319,990
Events in quadrant C2,773,078204,266
Events in quadrant D1,969,330268,347

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014553
B014665
C014868
D014556

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157767835
B01877610311
C02863318215
D01939410800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1140045143259176140041703653422
B1-1-1
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A373540.107095%
B3630280.771350%
C305759319.398103%
D3643270.741147%

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 8175 4645 1 1 0.01% 0.02%
B 8171 4521 6 6 0.07% 0.13%
C 8198 3757 215 215 2.62% 5.72%
D 8214 4529 18 18 0.22% 0.40%

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 11 3 58547 589.0 393 383 98.8
A 3 14 43418 435.79 393 383 98.8
A 7 221 26821 267.72 393 383 98.8
B 2 249 265110 3171.89 382 369 83.5
B 7 0 100448 1199.06 382 369 83.5
B 10 247 25348 299.28 382 369 83.5
C 15 219 1282602 15672.53 293 290 81.8
C 13 3 152760 1863.5 293 290 81.8
C 6 223 57887 703.95 293 290 81.8
D 11 129 197655 1861.64 370 354 106.0
D 3 12 192749 1815.35 370 354 106.0
D 5 173 33041 308.42 370 354 106.0

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