ASTROSAT CZTI

Data Quality Report

Orbit 37461

Creation date: 2024-06-27T21:40:17.649368
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_027T01_9000005324_37461cztM0_level2.evt modeM0/AS1A11_027T01_9000005324_37461cztM0_level2_quad_clean.evt
Size (bytes)473,129,280100,520,640
Size451.2 MB 95.9 MB
Events in quadrant A3,040,265678,355
Events in quadrant B2,894,246691,581
Events in quadrant C3,566,889684,459
Events in quadrant D4,479,111629,773

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123993
B0119212
C0137982
D0167822

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5141330.641898%
B51411382.684303%
C5141951.847890%
D51412695.232445%

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 7053 5142 17 17 0.24% 0.33%
B 7053 5142 127 127 1.80% 2.47%
C 7053 5142 91 91 1.29% 1.77%
D 7053 5142 303 303 4.30% 5.89%

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 15 222 350205 2949.58 590 578 118.5
A 10 83 272550 2294.45 590 578 118.5
A 13 248 85698 718.1 590 578 118.5
B 5 200 297027 2673.16 586 571 110.9
B 5 184 90440 810.35 586 571 110.9
B 4 171 79687 713.39 586 571 110.9
C 0 207 807873 6045.01 583 588 133.5
C 15 214 217705 1625.79 583 588 133.5
C 0 10 145725 1086.8 583 588 133.5
D 12 235 1283644 9364.18 565 551 137.0
D 13 249 517717 3774.35 565 551 137.0
D 2 249 255647 1861.72 565 551 137.0

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