ASTROSAT CZTI

Data Quality Report

Orbit 11640

Creation date: 2024-06-27T16:16:16.972172
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/AS1A04_026T01_9000001712_11640cztM0_level2.evt modeM0/AS1A04_026T01_9000001712_11640cztM0_level2_quad_clean.evt
Size (bytes)318,309,12034,493,760
Size303.6 MB 32.9 MB
Events in quadrant A1,976,121212,974
Events in quadrant B2,148,651213,859
Events in quadrant C1,432,407205,534
Events in quadrant D3,866,930186,227

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080521
B083661
C064311
D0137091

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3165762.401264%
B31651735.466035%
C3165220.695103%
D316647715.066330%

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 3166 3166 6 6 0.19% 0.19%
B 3166 3166 79 79 2.50% 2.50%
C 3166 3166 0 0 0.00% 0.00%
D 3167 3167 413 413 13.04% 13.04%

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 1 162 150916 1935.97 378 371 77.8
A 1 178 89144 1141.6 378 371 77.8
A 8 5 80928 1035.94 378 371 77.8
B 4 239 573528 7948.64 373 367 72.1
B 15 204 45310 623.27 373 367 72.1
B 0 219 35380 485.56 373 367 72.1
C 8 128 5951 65.62 363 364 85.1
C 8 112 3574 37.7 363 364 85.1
C 13 61 2737 27.87 363 364 85.1
D 13 152 1486053 17364.7 352 340 85.6
D 13 104 376339 4394.59 352 340 85.6
D 1 52 334882 3910.05 352 340 85.6

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