ASTROSAT CZTI

Data Quality Report

Orbit 47666

Creation date: 2024-07-21T23:40:51.388806
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_082T01_9000006342_47666cztM0_level2.fits modeM0/AS1A13_082T01_9000006342_47666cztM0_level2_quad_clean.evt
Size (bytes)2,341,584,000530,723,520
Size2.2 GB 506.1 MB
Events in quadrant A33,798,6263,504,259
Events in quadrant B18,370,1713,604,518
Events in quadrant C14,723,1673,531,148
Events in quadrant D17,316,0523,229,556

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01254465
B0752225
C0666225
D0735965

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06520
B06520
C06520
D06520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3201713414.188400%
B3201711493.588718%
C320183231.008808%
D320187002.186270%

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 38497 32020 139 139 0.36% 0.43%
B 38497 32023 350 350 0.91% 1.09%
C 38498 32024 25 25 0.06% 0.08%
D 38498 32024 302 302 0.78% 0.94%

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 18242163 23720.35 3716 3628 768.9
A 9 191 1051305 1362.57 3716 3628 768.9
A 13 248 102272 128.29 3716 3628 768.9
B 0 200 2411154 3357.35 3690 3578 717.1
B 5 172 625133 866.76 3690 3578 717.1
B 5 255 197896 270.98 3690 3578 717.1
C 3 233 215071 246.3 3663 3676 858.3
C 14 254 189533 216.54 3663 3676 858.3
C 12 2 28204 28.58 3663 3676 858.3
D 2 249 1213512 1318.18 3688 3574 917.9
D 12 2 794743 861.95 3688 3574 917.9
D 10 181 457321 494.34 3688 3574 917.9

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