ASTROSAT CZTI

Data Quality Report

Orbit 33441

Creation date: 2024-06-27T20:48:52.995468
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/AS1A11_065T01_9000004794_33441cztM0_level2.evt modeM0/AS1A11_065T01_9000004794_33441cztM0_level2_quad_clean.evt
Size (bytes)484,827,84061,251,840
Size462.4 MB 58.4 MB
Events in quadrant A2,549,968379,585
Events in quadrant B3,549,356368,823
Events in quadrant C2,875,056371,114
Events in quadrant D5,333,124347,243

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111673
B0139952
C0117052
D0195902

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A554240.072176%
B55422744.944064%
C5542320.577409%
D55422835.106460%

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 7245 5543 0 0 0.00% 0.00%
B 7245 5543 224 224 3.09% 4.04%
C 7245 5543 29 29 0.40% 0.52%
D 7245 5543 261 261 3.60% 4.71%

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 48 23529 176.3 648 635 129.9
A 13 6 20117 150.02 648 635 129.9
A 13 254 9773 70.37 648 635 129.9
B 5 172 605510 4969.73 630 613 121.7
B 5 255 269238 2206.98 630 613 121.7
B 0 213 53317 433.01 630 613 121.7
C 15 214 242412 1691.71 620 624 142.9
C 0 10 100688 700.11 620 624 142.9
C 14 254 56559 391.36 620 624 142.9
D 8 195 1864307 11498.79 611 595 162.1
D 12 218 307657 1894.52 611 595 162.1
D 2 250 185197 1138.96 611 595 162.1

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