ASTROSAT CZTI

Data Quality Report

Orbit 15105

Creation date: 2024-06-27T17:03:47.315319
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/AS1G08_028T01_9000002220_15105cztM0_level2.evt modeM0/AS1G08_028T01_9000002220_15105cztM0_level2_quad_clean.evt
Size (bytes)1,257,192,000219,265,920
Size1.2 GB 209.1 MB
Events in quadrant A8,037,6301,389,230
Events in quadrant B11,573,5061,399,914
Events in quadrant C9,598,0681,345,729
Events in quadrant D7,698,4491,316,663

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0352964
B0456044
C0387574
D0353134

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03520
B03520
C03520
D03520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A172521460.846279%
B1725212066.990494%
C172523241.878043%
D172521440.834686%

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 19253 17254 5 5 0.03% 0.03%
B 19253 17254 621 621 3.23% 3.60%
C 19253 17255 166 166 0.86% 0.96%
D 19253 17254 15 15 0.08% 0.09%

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 11 29 68643 160.19 2070 2025 415.9
A 0 226 17934 38.25 2070 2025 415.9
A 12 194 15007 31.22 2070 2025 415.9
B 10 245 3100666 7973.45 2027 1974 388.6
B 3 64 519392 1331.4 2027 1974 388.6
B 12 111 49139 121.36 2027 1974 388.6
C 4 254 979926 2101.9 2004 2019 465.2
C 3 233 784265 1681.35 2004 2019 465.2
C 8 128 14833 27.54 2004 2019 465.2
D 7 223 72928 145.04 2008 1949 489.4
D 2 234 71522 142.17 2008 1949 489.4
D 10 70 27095 51.38 2008 1949 489.4

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