ASTROSAT CZTI

Data Quality Report

Orbit 31930

Creation date: 2024-06-27T20:34:20.403657
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/AS1A10_059T01_9000004656_31930cztM0_level2.evt modeM0/AS1A10_059T01_9000004656_31930cztM0_level2_quad_clean.evt
Size (bytes)416,934,72045,095,040
Size397.6 MB 43.0 MB
Events in quadrant A2,259,098306,784
Events in quadrant B2,912,725308,167
Events in quadrant C2,746,725302,822
Events in quadrant D4,469,712197,874

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09476397
B011451314
C010800250
D016047238

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0742
B0733
C0742
D0731

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A35131474.184458%
B35141353.841776%
C35202577.301136%
D3524109831.157775%

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 4809 3522 49 49 1.02% 1.39%
B 4814 3525 6 6 0.12% 0.17%
C 4820 3534 24 24 0.50% 0.68%
D 4820 3537 945 945 19.61% 26.72%

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 96 374647 3828.53 487 479 97.7
A 13 254 6753 64.2 487 479 97.7
A 13 6 5065 46.92 487 479 97.7
B 6 159 906765 9992.67 482 472 90.7
B 4 80 71190 779.73 482 472 90.7
B 10 245 15099 161.28 482 472 90.7
C 3 233 612564 5753.95 461 465 106.4
C 0 10 186958 1753.1 461 465 106.4
C 14 238 75418 704.59 461 465 106.4
D 13 249 2018859 21522.2 396 386 93.8
D 12 33 615045 6553.87 396 386 93.8
D 8 195 273808 2915.39 396 386 93.8

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