ASTROSAT CZTI

Data Quality Report

Orbit 27768

Creation date: 2024-06-27T19:44:10.823497
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_038T34_9000004008_27768cztM0_level2.evt modeM0/AS1A09_038T34_9000004008_27768cztM0_level2_quad_clean.evt
Size (bytes)349,960,32095,411,520
Size333.7 MB 91.0 MB
Events in quadrant A2,279,213645,635
Events in quadrant B2,438,295653,358
Events in quadrant C2,760,359618,075
Events in quadrant D2,768,466610,256

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103480
B0106290
C0114140
D0119830

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A516820.038700%
B5168100.193498%
C5168871.683437%
D5169290.561037%

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 5168 5168 0 0 0.00% 0.00%
B 5168 5168 3 3 0.06% 0.06%
C 5168 5168 49 49 0.95% 0.95%
D 5169 5169 23 23 0.44% 0.44%

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 13 254 8866 68.89 590 577 120.3
A 3 137 5490 40.83 590 577 120.3
A 0 226 5104 37.62 590 577 120.3
B 3 64 57490 510.01 588 577 111.6
B 0 190 18936 164.52 588 577 111.6
B 4 52 16795 145.33 588 577 111.6
C 3 233 444491 3364.31 562 567 132.0
C 14 238 92096 693.66 562 567 132.0
C 2 16 29340 218.06 562 567 132.0
D 1 52 432608 3185.87 569 552 135.6
D 2 250 123120 903.79 569 552 135.6
D 2 234 22471 161.63 569 552 135.6

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