ASTROSAT CZTI

Data Quality Report

Orbit 48520

Creation date: 2024-09-21T12:17:32.080916
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_9000006434_48520cztM0_level2.fits modeM0/AS1A13_037T05_9000006434_48520cztM0_level2_quad_clean.evt
Size (bytes)498,922,560106,551,360
Size475.8 MB 101.6 MB
Events in quadrant A7,014,552692,089
Events in quadrant B3,100,686743,942
Events in quadrant C2,845,909713,179
Events in quadrant D4,987,669610,115

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257077
B0141082
C0136322
D0199532

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66972704.031656%
B6698981.463123%
C6698190.283667%
D66994817.180176%

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 8958 6700 77 77 0.86% 1.15%
B 8958 6700 11 11 0.12% 0.16%
C 8958 6700 0 0 0.00% 0.00%
D 8959 6701 493 493 5.50% 7.36%

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 4138481 27537.84 724 707 150.3
A 12 189 42587 278.72 724 707 150.3
A 13 248 15047 95.44 724 707 150.3
B 0 186 89609 620.31 736 712 143.3
B 5 255 52648 362.4 736 712 143.3
B 12 16 30740 209.53 736 712 143.3
C 14 67 15449 86.26 722 727 170.7
C 3 233 9641 52.23 722 727 170.7
C 14 254 8038 42.83 722 727 170.7
D 2 165 1988847 11346.75 697 674 175.2
D 2 249 267243 1521.34 697 674 175.2
D 13 171 53691 302.57 697 674 175.2

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