ASTROSAT CZTI

Data Quality Report

Orbit 51224

Creation date: 2025-03-18T15:33:07.071707
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_51224cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51224cztM0_level2_quad_clean.evt
Size (bytes)690,022,08094,705,920
Size658.1 MB 90.3 MB
Events in quadrant A4,882,725653,806
Events in quadrant B9,651,126493,178
Events in quadrant C5,324,001624,806
Events in quadrant D5,114,771583,867

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0195800
B0337580
C0209306
D0204280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73461882.559216%
B7347262535.728869%
C73464486.098557%
D73463775.132045%

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 7346 7346 154 154 2.10% 2.10%
B 7347 7347 2102 2102 28.61% 28.61%
C 7346 7346 457 457 6.22% 6.22%
D 7346 7346 368 368 5.01% 5.01%

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 581785 3132.36 746 728 185.5
A 9 160 325082 1748.53 746 728 185.5
A 8 26 222874 1197.54 746 728 185.5
B 6 255 2450255 17914.43 629 607 136.7
B 12 32 2170911 15871.57 629 607 136.7
B 5 185 1576614 11525.44 629 607 136.7
C 4 12 1124164 5667.95 714 711 198.2
C 1 60 343523 1729.53 714 711 198.2
C 4 13 336086 1692.01 714 711 198.2
D 3 12 727811 3652.08 705 680 199.1
D 10 181 319857 1603.09 705 680 199.1
D 10 172 264885 1326.99 705 680 199.1

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