ASTROSAT CZTI

Data Quality Report

Orbit 06957

Creation date: 2024-06-27T15:13:43.000195
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/AS1A02_090T02_9000000956_06957cztM0_level2.evt modeM0/AS1A02_090T02_9000000956_06957cztM0_level2_quad_clean.evt
Size (bytes)438,445,44088,871,040
Size418.1 MB 84.8 MB
Events in quadrant A3,031,464556,895
Events in quadrant B3,284,847563,157
Events in quadrant C3,009,103560,588
Events in quadrant D3,492,244538,553

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137983
B0143802
C0138282
D0150525

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6772410.605434%
B6772911.343768%
C6772380.561134%
D6771540.797519%

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 7764 6774 1 1 0.01% 0.01%
B 7764 6774 35 35 0.45% 0.52%
C 7764 6774 4 4 0.05% 0.06%
D 7763 6773 19 19 0.24% 0.28%

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 13 248 15195 90.01 783 765 160.3
A 0 226 7544 42.28 783 765 160.3
A 12 194 7152 39.84 783 765 160.3
B 4 81 183121 1202.15 785 767 151.7
B 12 111 15482 97.01 785 767 151.7
B 0 219 13385 83.18 785 767 151.7
C 12 4 41600 229.84 760 764 177.7
C 13 61 5990 29.41 760 764 177.7
C 1 3 2208 8.13 760 764 177.7
D 8 195 392272 2107.17 758 733 185.8
D 2 14 74767 398.43 758 733 185.8
D 12 233 55427 294.35 758 733 185.8

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