ASTROSAT CZTI

Data Quality Report

Orbit 51254

Creation date: 2025-03-20T16:21:53.500982
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_001T01_9000006454_51254cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51254cztM0_level2_quad_clean.evt
Size (bytes)885,398,40094,838,400
Size844.4 MB 90.4 MB
Events in quadrant A6,968,376657,011
Events in quadrant B4,472,948763,911
Events in quadrant C14,180,901328,145
Events in quadrant D6,553,403584,031

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260400
B0187791
C0474580
D0249970

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77406588.501292%
B77401862.403101%
C7740438056.589147%
D77407509.689922%

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 7740 7740 482 482 6.23% 6.23%
B 7740 7740 91 91 1.18% 1.18%
C 7739 7739 3814 3814 49.28% 49.28%
D 7740 7740 706 706 9.12% 9.12%

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 12 250 1588611 8086.24 778 756 196.4
A 12 3 1200159 6108.03 778 756 196.4
A 4 249 204640 1038.29 778 756 196.4
B 4 171 444950 2627.09 792 764 169.1
B 7 252 202162 1191.15 792 764 169.1
B 8 128 130491 767.26 792 764 169.1
C 4 12 4939154 32327.88 544 542 152.8
C 15 205 4749693 31087.68 544 542 152.8
C 3 242 1147064 7505.07 544 542 152.8
D 7 60 1368102 6546.89 740 714 208.9
D 8 176 956832 4577.78 740 714 208.9
D 7 96 279498 1334.78 740 714 208.9

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