ASTROSAT CZTI

Data Quality Report

Orbit 37464

Creation date: 2024-06-27T21:40:20.957830
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/AS1A11_027T01_9000005324_37464cztM0_level2.evt modeM0/AS1A11_027T01_9000005324_37464cztM0_level2_quad_clean.evt
Size (bytes)490,933,440103,423,680
Size468.2 MB 98.6 MB
Events in quadrant A4,161,566687,021
Events in quadrant B2,817,039722,445
Events in quadrant C2,921,420716,567
Events in quadrant D4,617,189643,361

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159823
B0115772
C0115302
D0171242

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5176480.927357%
B5176420.811437%
C5176681.313756%
D517655410.703246%

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 7298 5177 27 27 0.37% 0.52%
B 7298 5177 27 27 0.37% 0.52%
C 7298 5177 52 52 0.71% 1.00%
D 7297 5176 510 510 6.99% 9.85%

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 1389268 11605.24 604 594 119.7
A 10 83 274814 2291.67 604 594 119.7
A 13 248 119940 997.38 604 594 119.7
B 5 172 181882 1597.57 610 594 113.5
B 0 213 112331 984.67 610 594 113.5
B 4 171 27843 240.13 610 594 113.5
C 15 214 222234 1591.11 606 611 139.3
C 0 10 211204 1511.92 606 611 139.3
C 14 254 100934 720.25 606 611 139.3
D 13 249 1765585 12610.71 579 565 140.0
D 4 239 209179 1490.5 579 565 140.0
D 12 227 135176 961.77 579 565 140.0

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