ASTROSAT CZTI

Data Quality Report

Orbit 11889

Creation date: 2024-06-27T16:19:47.859555
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/AS1G08_083T04_9000001760_11889cztM0_level2.evt modeM0/AS1G08_083T04_9000001760_11889cztM0_level2_quad_clean.evt
Size (bytes)288,072,00041,463,360
Size274.7 MB 39.5 MB
Events in quadrant A2,242,876243,245
Events in quadrant B2,219,120242,851
Events in quadrant C1,769,035248,171
Events in quadrant D2,218,665237,255

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A093002
B092421
C082331
D090541

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A40201042.587065%
B40201593.955224%
C4020551.368159%
D4020832.064677%

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 4021 4021 1 1 0.02% 0.02%
B 4021 4021 35 35 0.87% 0.87%
C 4021 4021 0 0 0.00% 0.00%
D 4021 4021 21 21 0.52% 0.52%

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 8 15 242819 2501.38 463 451 96.9
A 1 162 85628 879.08 463 451 96.9
A 1 178 45142 461.24 463 451 96.9
B 4 239 299870 3358.47 459 448 89.2
B 15 204 38411 425.81 459 448 89.2
B 3 209 24596 270.85 459 448 89.2
C 8 128 4731 40.54 451 452 105.5
C 13 61 3384 27.78 451 452 105.5
C 12 4 3375 27.7 451 452 105.5
D 8 195 234312 2120.0 449 434 110.3
D 10 199 47625 427.76 449 434 110.3
D 13 249 44967 403.67 449 434 110.3

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