ASTROSAT CZTI

Data Quality Report

Orbit 33846

Creation date: 2024-06-27T20:53:18.485521
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_065T07_9000004828_33846cztM0_level2.evt modeM0/AS1A11_065T07_9000004828_33846cztM0_level2_quad_clean.evt
Size (bytes)472,847,04086,846,400
Size450.9 MB 82.8 MB
Events in quadrant A2,535,549581,444
Events in quadrant B3,019,720576,607
Events in quadrant C2,912,369578,378
Events in quadrant D5,503,975533,233

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106012
B0122331
C0116911
D0198351

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5146120.233191%
B51461402.720560%
C5146500.971628%
D51464378.492033%

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 6998 5147 5 5 0.07% 0.10%
B 6998 5147 89 89 1.27% 1.73%
C 6998 5147 38 38 0.54% 0.74%
D 6998 5147 374 374 5.34% 7.27%

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 15 169 110347 887.43 612 600 123.7
A 7 16 28482 225.46 612 600 123.7
A 13 6 18639 145.87 612 600 123.7
B 5 172 494540 4234.9 605 590 116.6
B 0 190 41863 353.86 605 590 116.6
B 0 199 27866 233.85 605 590 116.6
C 15 214 222901 1603.78 597 603 138.6
C 0 10 121284 870.66 597 603 138.6
C 14 254 93980 673.67 597 603 138.6
D 8 195 1303427 8997.91 583 566 144.8
D 12 235 967671 6679.09 583 566 144.8
D 2 250 564687 3895.97 583 566 144.8

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