ASTROSAT CZTI

Data Quality Report

Orbit 53447

Creation date: 2025-08-15T08:53:35.723026
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_002T06_9000006496_53447cztM0_level2.fits modeM0/AS1A14_002T06_9000006496_53447cztM0_level2_quad_clean.evt
Size (bytes)869,745,600102,715,200
Size829.5 MB 98.0 MB
Events in quadrant A7,754,714649,434
Events in quadrant B5,888,582778,493
Events in quadrant C12,037,915493,735
Events in quadrant D5,902,691638,659

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0285360
B0230560
C0412580
D0231850

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7903133916.942933%
B79036017.604707%
C7903284435.986334%
D79034715.959762%

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 7903 7903 1144 1144 14.48% 14.48%
B 7903 7903 292 292 3.69% 3.69%
C 7903 7903 2210 2210 27.96% 27.96%
D 7903 7903 348 348 4.40% 4.40%

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 15 174 2210237 11256.47 792 775 196.3
A 3 63 2053902 10460.0 792 775 196.3
A 3 78 210944 1070.74 792 775 196.3
B 4 171 1558779 8686.92 827 797 179.3
B 8 234 577762 3217.01 827 797 179.3
B 0 213 159690 885.95 827 797 179.3
C 15 158 3010891 15265.13 715 709 197.2
C 15 224 2005789 10168.09 715 709 197.2
C 15 178 1505791 7632.52 715 709 197.2
D 2 172 1171616 5131.43 806 771 228.2
D 12 3 439531 1922.94 806 771 228.2
D 3 224 312193 1364.86 806 771 228.2

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