ASTROSAT CZTI

Data Quality Report

Orbit 46231

Creation date: 2024-06-27T23:20:36.317993
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/AS1A13_065T07_9000006188_46231cztM0_level2.fits modeM0/AS1A13_065T07_9000006188_46231cztM0_level2_quad_clean.evt
Size (bytes)256,769,28058,484,160
Size244.9 MB 55.8 MB
Events in quadrant A3,297,970386,274
Events in quadrant B1,942,752406,704
Events in quadrant C1,679,966384,340
Events in quadrant D2,294,489331,070

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012251101
B0823939
C0794646
D0977985

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A37041042.807775%
B3712370.996767%
C3710230.619946%
D37022677.212318%

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 3731 3716 13 13 0.35% 0.35%
B 3731 3722 18 18 0.48% 0.48%
C 3731 3720 21 21 0.56% 0.56%
D 3731 3713 250 250 6.70% 6.73%

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 10 83 1719267 20548.99 392 383 83.6
A 0 247 53176 631.13 392 383 83.6
A 13 254 6107 68.43 392 383 83.6
B 3 112 267056 3368.92 397 386 79.2
B 8 234 46989 588.75 397 386 79.2
B 5 172 41285 516.69 397 386 79.2
C 12 2 96096 1031.67 386 389 92.8
C 1 3 70775 758.72 386 389 92.8
C 9 69 5369 53.68 386 389 92.8
D 10 204 366805 3848.66 372 360 95.2
D 13 249 328583 3447.23 372 360 95.2
D 5 235 101862 1066.05 372 360 95.2

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