ASTROSAT CZTI

Data Quality Report

Orbit 51395

Creation date: 2025-03-30T04:36:28.714974
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_001T03_9000006456_51395cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51395cztM0_level2_quad_clean.evt
Size (bytes)415,751,04044,104,320
Size396.5 MB 42.1 MB
Events in quadrant A4,477,794283,173
Events in quadrant B2,705,480324,608
Events in quadrant C5,943,079179,454
Events in quadrant D1,996,425304,532

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0848
B0772
C0804
D0826

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171251363
B011195812
C0214111405
D09061641

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232
B0254
C0309
D0221

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A342071020.760234%
B342948814.231554%
C3421176651.622333%
D34361173.405122%

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 7874 3430 483 483 6.13% 14.08%
B 7867 3437 276 276 3.51% 8.03%
C 7872 3427 1554 1554 19.74% 45.35%
D 7878 3450 42 42 0.53% 1.22%

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 12 3 1370146 15498.74 357 348 88.4
A 15 174 946012 10699.82 357 348 88.4
A 4 175 238204 2691.25 357 348 88.4
B 5 172 729370 9690.09 354 342 75.2
B 5 185 185110 2455.9 354 342 75.2
B 6 51 114781 1521.1 354 342 75.2
C 4 12 3878547 53917.15 261 259 71.9
C 15 179 824823 11463.34 261 259 71.9
C 13 3 75185 1041.64 261 259 71.9
D 11 176 265641 2567.29 369 356 103.3
D 2 153 89535 863.03 369 356 103.3
D 2 120 25707 245.33 369 356 103.3

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