ASTROSAT CZTI

Data Quality Report

Orbit 54216

Creation date: 2025-10-06T03:08:35.052498
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/AS1C09_004T08_9000006514_54216cztM0_level2.fits modeM0/AS1C09_004T08_9000006514_54216cztM0_level2_quad_clean.evt
Size (bytes)838,540,80087,226,560
Size799.7 MB 83.2 MB
Events in quadrant A4,042,679689,392
Events in quadrant B4,511,826718,290
Events in quadrant C5,564,785569,374
Events in quadrant D16,346,983149,817

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173502
B0188320
C0221320
D0536411

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73881572.125068%
B73904466.035183%
C7391101913.787038%
D7390564876.427605%

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 7390 7390 119 119 1.61% 1.61%
B 7390 7390 254 254 3.44% 3.44%
C 7391 7391 857 857 11.60% 11.60%
D 7391 7391 5573 5573 75.40% 75.40%

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 7 29 319541 1666.98 765 747 191.2
A 5 243 142221 739.77 765 747 191.2
A 4 5 127861 664.68 765 747 191.2
B 8 234 1084084 6829.06 749 725 158.6
B 5 236 107850 675.27 749 725 158.6
B 0 213 96032 600.78 749 725 158.6
C 15 215 1160889 6151.44 685 680 188.6
C 15 198 872986 4624.98 685 680 188.6
C 15 216 500564 2650.39 685 680 188.6
D 8 176 13893547 142481.02 332 317 97.5
D 2 172 510692 5234.11 332 317 97.5
D 11 176 221873 2272.15 332 317 97.5

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