ASTROSAT CZTI

Data Quality Report

Orbit 39458

Creation date: 2024-06-27T22:04:46.954385
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_044T16_9000005478_39458cztM0_level2.fits modeM0/AS1A12_044T16_9000005478_39458cztM0_level2_quad_clean.evt
Size (bytes)288,671,04058,878,720
Size275.3 MB 56.2 MB
Events in quadrant A3,813,094379,425
Events in quadrant B2,085,140406,092
Events in quadrant C2,349,995380,185
Events in quadrant D2,157,348363,639

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139082
B086351
C091471
D088161

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A358638610.764083%
B35861594.433910%
C35861925.354155%
D3586742.063581%

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 5348 3587 410 410 7.67% 11.43%
B 5348 3587 101 101 1.89% 2.82%
C 5348 3587 182 182 3.40% 5.07%
D 5348 3587 69 69 1.29% 1.92%

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 15 222 1980543 24688.82 392 384 80.2
A 10 83 254337 3166.31 392 384 80.2
A 6 10 40182 496.21 392 384 80.2
B 5 172 507206 6595.17 395 384 76.8
B 0 230 13366 168.93 395 384 76.8
B 12 111 9714 121.41 395 384 76.8
C 15 208 641647 6889.3 389 392 93.1
C 15 214 145514 1559.11 389 392 93.1
C 10 70 28874 306.0 389 392 93.1
D 12 227 464809 4774.7 389 377 97.3
D 13 249 54792 559.43 389 377 97.3
D 1 52 45019 458.95 389 377 97.3

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