ASTROSAT CZTI

Data Quality Report

Orbit 44574

Creation date: 2024-06-27T23:04:06.820623
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_003T01_9000006002_44574cztM0_level2.fits modeM0/AS1A13_003T01_9000006002_44574cztM0_level2_quad_clean.evt
Size (bytes)466,320,960113,981,760
Size444.7 MB 108.7 MB
Events in quadrant A4,918,787771,858
Events in quadrant B3,449,363799,647
Events in quadrant C4,726,073731,689
Events in quadrant D3,659,515692,210

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0201842
B0146272
C0185002
D0154072

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65431081.650619%
B65431161.772887%
C65433986.082837%
D65431332.032707%

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 7778 6544 11 11 0.14% 0.17%
B 7778 6543 55 55 0.71% 0.84%
C 7777 6542 280 280 3.60% 4.28%
D 7778 6543 107 107 1.38% 1.64%

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 1926421 12156.65 768 752 158.4
A 0 243 9057 52.43 768 752 158.4
A 3 137 8436 48.51 768 752 158.4
B 5 172 123241 812.98 769 746 150.7
B 5 235 107526 708.68 769 746 150.7
B 4 171 85869 564.95 769 746 150.7
C 15 208 1472538 8554.75 738 743 172.0
C 3 233 220428 1276.91 738 743 172.0
C 14 254 106258 613.3 738 743 172.0
D 2 249 240863 1286.82 744 722 186.6
D 1 52 178612 953.24 744 722 186.6
D 13 249 137089 730.74 744 722 186.6

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