ASTROSAT CZTI

Data Quality Report

Orbit 20240502_A13_037T05_9000006216_level2

Creation date: 2024-05-06T16:04:05.449727
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/AS1A13_037T05_9000006216cztM0_level2.fits modeM0/AS1A13_037T05_9000006216cztM0_level2_quad_clean.evt
Size (bytes)542,926,080513,072,000
Size517.8 MB 489.3 MB
Events in quadrant A3,192,0563,001,854
Events in quadrant B2,975,3662,742,895
Events in quadrant C3,298,0462,965,612
Events in quadrant D2,769,3962,624,687

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02066850
B01918220
C01267930
D01664870

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012420
B012420
C012420
D012420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6126519553.191055%
B61265834913.627683%
C612653060.499470%
D6126521783.555048%

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 66775 61262 0 0 0.00% 0.00%
B 66775 61237 0 0 0.00% 0.00%
C 66774 61264 0 0 0.00% 0.00%
D 66774 61247 0 0 0.00% 0.00%

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 7 110 2694 8.98 832 773 214.0
A 14 95 2468 7.92 832 773 214.0
A 0 29 2416 7.68 832 773 214.0
B 2 9 2836 13.51 783 744 154.9
B 2 8 2272 9.87 783 744 154.9
B 3 17 2164 9.17 783 744 154.9
C 3 202 2585 7.87 871 810 225.5
C 1 81 2487 7.44 871 810 225.5
C 3 203 2463 7.33 871 810 225.5
D 10 189 2061 6.21 794 720 216.1
D 12 6 2032 6.07 794 720 216.1
D 15 47 2008 5.96 794 720 216.1

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