ASTROSAT CZTI

Data Quality Report

Orbit 01282

Creation date: 2024-06-27T14:10:21.212912
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/AS1G04_011T02_9000000226_01282cztM0_level2.evt modeM0/AS1G04_011T02_9000000226_01282cztM0_level2_quad_clean.evt
Size (bytes)1,242,244,80091,175,040
Size1.2 GB 87.0 MB
Events in quadrant A7,309,823612,265
Events in quadrant B8,723,278602,386
Events in quadrant C7,555,577590,586
Events in quadrant D13,619,527517,363

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262072
B0303491
C0269241
D0450371

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6269240.382836%
B62691211.930132%
C6269140.223321%
D6269141022.491625%

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 7064 6269 129 129 1.83% 2.06%
B 7064 6269 710 710 10.05% 11.33%
C 7064 6269 143 143 2.02% 2.28%
D 7063 6268 3349 3349 47.42% 53.43%

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 79 9826 17.21 1899 1910 460.0
A 13 9 7805 12.82 1899 1910 460.0
A 0 214 5868 8.6 1899 1910 460.0
B 8 4 557566 1181.52 1987 1993 470.2
B 4 216 332022 701.86 1987 1993 470.2
B 6 53 115440 241.26 1987 1993 470.2
C 15 241 319503 646.45 1772 1832 491.4
C 8 208 236869 478.29 1772 1832 491.4
C 3 79 38619 74.86 1772 1832 491.4
D 13 169 6038588 12058.16 1601 1659 500.7
D 10 84 628188 1251.43 1601 1659 500.7
D 10 85 542988 1081.25 1601 1659 500.7

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