ASTROSAT CZTI

Data Quality Report

Orbit 37694

Creation date: 2024-06-27T21:43:12.046578
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_075T01_9000005342_37694cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37694cztM0_level2_quad_clean.evt
Size (bytes)596,880,00082,080,000
Size569.2 MB 78.3 MB
Events in quadrant A8,000,986452,249
Events in quadrant B2,699,502578,272
Events in quadrant C2,786,139576,106
Events in quadrant D4,258,488534,048

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0272403
B0111332
C0112152
D0161432

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4907185137.721622%
B4907330.672509%
C4907450.917057%
D4907691.406154%

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 6969 4908 1715 1715 24.61% 34.94%
B 6968 4906 17 17 0.24% 0.35%
C 6968 4906 31 31 0.44% 0.63%
D 6968 4906 56 56 0.80% 1.14%

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 5707309 55584.17 517 509 102.7
A 10 83 245506 2386.27 517 509 102.7
A 9 143 32967 316.14 517 509 102.7
B 5 172 98548 839.48 627 612 116.7
B 0 230 45317 383.2 627 612 116.7
B 5 184 34432 289.89 627 612 116.7
C 15 214 208938 1462.44 622 628 142.4
C 0 10 117559 820.91 622 628 142.4
C 14 254 19734 134.13 622 628 142.4
D 12 227 1639813 11149.54 616 601 147.0
D 13 249 96520 652.42 616 601 147.0
D 5 32 44181 296.42 616 601 147.0

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