ASTROSAT CZTI

Data Quality Report

Orbit 46542

Creation date: 2024-06-27T23:24:30.321580
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_091T08_9000006228_46542cztM0_level2.fits modeM0/AS1A13_091T08_9000006228_46542cztM0_level2_quad_clean.evt
Size (bytes)388,108,80082,823,040
Size370.1 MB 79.0 MB
Events in quadrant A4,957,041541,284
Events in quadrant B2,508,396566,532
Events in quadrant C2,528,355545,638
Events in quadrant D3,964,087486,181

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180531
B0111351
C0112151
D0154161

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52571673.176717%
B5257380.722846%
C5257250.475556%
D52572594.926764%

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 6147 5257 72 72 1.17% 1.37%
B 6147 5257 13 13 0.21% 0.25%
C 6147 5258 19 19 0.31% 0.36%
D 6147 5258 204 204 3.32% 3.88%

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 2502688 21046.14 568 556 118.9
A 9 191 92931 776.99 568 556 118.9
A 14 235 75251 628.28 568 556 118.9
B 5 172 73697 635.37 571 553 115.1
B 3 112 54404 467.78 571 553 115.1
B 0 189 35002 299.24 571 553 115.1
C 9 54 258796 1940.29 564 567 133.1
C 14 254 32323 238.61 564 567 133.1
C 2 14 21999 161.04 564 567 133.1
D 1 52 1018556 7267.58 550 534 140.1
D 13 249 425899 3036.65 550 534 140.1
D 2 120 142621 1014.35 550 534 140.1

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