ASTROSAT CZTI

Data Quality Report

Orbit 52616

Creation date: 2025-06-20T11:55:59.773006
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_011T06_9000006478_52616cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52616cztM0_level2_quad_clean.evt
Size (bytes)987,906,24066,692,160
Size942.1 MB 63.6 MB
Events in quadrant A3,129,023580,435
Events in quadrant B8,548,905541,555
Events in quadrant C14,492,823101,513
Events in quadrant D9,910,980354,798

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142811
B0298201
C0472951
D0338331

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63131031.631554%
B6313125019.800412%
C6313528783.747822%
D6314230636.522015%

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 7073 6314 48 48 0.68% 0.76%
B 7073 6314 1080 1080 15.27% 17.10%
C 7072 6313 4487 4487 63.45% 71.08%
D 7074 6314 2026 2026 28.64% 32.09%

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 4 249 234945 1481.47 625 608 158.2
A 14 254 122414 770.05 625 608 158.2
A 3 14 111431 700.62 625 608 158.2
B 10 254 3800682 29721.35 601 581 127.9
B 10 128 1368885 10701.78 601 581 127.9
B 8 234 266671 2081.14 601 581 127.9
C 15 248 13146109 185688.21 251 249 70.8
C 13 3 88854 1251.57 251 249 70.8
C 1 44 66001 928.76 251 249 70.8
D 8 176 5141212 34072.85 507 481 150.9
D 2 62 1264283 8376.5 507 481 150.9
D 6 42 328849 2176.43 507 481 150.9

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