ASTROSAT CZTI

Data Quality Report

Orbit 26772

Creation date: 2024-06-27T19:32:37.876326
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/AS1A09_038T07_9000003858_26772cztM0_level2.evt modeM0/AS1A09_038T07_9000003858_26772cztM0_level2_quad_clean.evt
Size (bytes)692,691,84069,416,640
Size660.6 MB 66.2 MB
Events in quadrant A3,425,300496,774
Events in quadrant B8,312,440388,267
Events in quadrant C2,116,404492,322
Events in quadrant D6,814,744400,621

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133210
B0278240
C093300
D0233770

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4583581.265547%
B4584257256.108202%
C4584240.523560%
D4584157034.249564%

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 4583 4583 46 46 1.00% 1.00%
B 4584 4584 2246 2246 49.00% 49.00%
C 4584 4584 1 1 0.02% 0.02%
D 4584 4584 1322 1322 28.84% 28.84%

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 1414819 13481.8 517 506 104.9
A 6 16 10456 94.85 517 506 104.9
A 13 254 8264 73.95 517 506 104.9
B 0 189 6712016 86297.32 407 396 77.8
B 12 111 9169 112.8 407 396 77.8
B 11 111 8145 99.64 407 396 77.8
C 14 238 80720 679.4 503 507 118.1
C 2 16 35359 295.2 503 507 118.1
C 1 0 19749 162.98 503 507 118.1
D 7 80 4781123 44943.07 436 425 106.4
D 1 52 254011 2383.95 436 425 106.4
D 2 250 77739 726.82 436 425 106.4

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