ASTROSAT CZTI

Data Quality Report

Orbit 42315

Creation date: 2024-06-27T22:38:52.416271
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_102T01_9000005794_42315cztM0_level2.fits modeM0/AS1A12_102T01_9000005794_42315cztM0_level2_quad_clean.evt
Size (bytes)308,808,00093,677,760
Size294.5 MB 89.3 MB
Events in quadrant A2,957,261642,922
Events in quadrant B2,506,912646,884
Events in quadrant C2,494,560622,001
Events in quadrant D3,076,036568,881

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119002
B0107832
C0103642
D0125222

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5085190.373648%
B5085350.688299%
C508460.118017%
D50841192.340677%

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 7208 5086 10 10 0.14% 0.20%
B 7208 5086 21 21 0.29% 0.41%
C 7207 5085 1 1 0.01% 0.02%
D 7207 5085 102 102 1.42% 2.01%

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 10 83 577863 4827.49 588 578 119.6
A 7 3 56117 464.44 588 578 119.6
A 13 248 38305 315.49 588 578 119.6
B 0 245 81497 742.75 581 566 109.0
B 15 35 52479 476.44 581 566 109.0
B 3 112 34019 307.02 581 566 109.0
C 15 214 212006 1593.2 579 583 132.7
C 12 249 13239 95.37 579 583 132.7
C 15 111 4758 31.46 579 583 132.7
D 1 52 318202 2297.87 576 560 138.2
D 12 233 187189 1350.1 576 560 138.2
D 13 249 84477 607.07 576 560 138.2

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