ASTROSAT CZTI

Data Quality Report

Orbit 31654

Creation date: 2024-06-27T20:31:27.277333
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/AS1T04_026T01_9000004624_31654cztM0_level2.evt modeM0/AS1T04_026T01_9000004624_31654cztM0_level2_quad_clean.evt
Size (bytes)253,108,80039,925,440
Size241.4 MB 38.1 MB
Events in quadrant A3,359,531207,678
Events in quadrant B1,587,759290,914
Events in quadrant C1,036,241283,382
Events in quadrant D1,537,487274,053

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114460
B064600
C043630
D062390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2098109152.001907%
B209990.428776%
C2099110.524059%
D2099180.857551%

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 2098 2098 819 819 39.04% 39.04%
B 2099 2099 1 1 0.05% 0.05%
C 2099 2099 0 0 0.00% 0.00%
D 2099 2099 13 13 0.62% 0.62%

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 0 13 2599510 63137.78 196 192 41.2
A 13 254 3166 72.24 196 192 41.2
A 3 137 1853 40.35 196 192 41.2
B 6 159 493277 9929.45 252 246 49.7
B 10 245 50470 1011.49 252 246 49.7
B 0 190 48159 964.95 252 246 49.7
C 14 238 41672 675.82 251 253 61.3
C 3 233 5914 92.37 251 253 61.3
C 2 114 4652 71.78 251 253 61.3
D 8 195 462238 7497.14 255 250 61.6
D 12 2 62150 1004.51 255 250 61.6
D 2 250 21742 348.77 255 250 61.6

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