ASTROSAT CZTI

Data Quality Report

Orbit 41823

Creation date: 2024-06-27T22:33:14.347741
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/AS1A12_097T03_9000005706_41823cztM0_level2.fits modeM0/AS1A12_097T03_9000005706_41823cztM0_level2_quad_clean.evt
Size (bytes)59,189,76013,910,400
Size56.4 MB 13.3 MB
Events in quadrant A669,27492,251
Events in quadrant B366,280100,106
Events in quadrant C706,98678,430
Events in quadrant D382,28586,837

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025391
B016301
C026161
D017131

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A810556.790123%
B80910.123609%
C80912715.698393%
D80940.494438%

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 810 810 52 52 6.42% 6.42%
B 809 809 0 0 0.00% 0.00%
C 809 809 126 126 15.57% 15.57%
D 809 809 4 4 0.49% 0.49%

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 14 24 145765 7363.25 90 89 19.8
A 10 83 145362 7342.88 90 89 19.8
A 7 3 19583 985.33 90 89 19.8
B 0 246 4326 215.16 91 89 19.7
B 0 245 2130 103.64 91 89 19.7
B 12 111 2116 102.93 91 89 19.7
C 0 10 371764 18859.09 76 76 19.7
C 15 214 33143 1677.79 76 76 19.7
C 14 254 2332 114.47 76 76 19.7
D 13 249 30368 1307.82 88 85 23.2
D 2 234 3347 140.87 88 85 23.2
D 2 249 3308 139.19 88 85 23.2

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