ASTROSAT CZTI

Data Quality Report

Orbit 48444

Creation date: 2024-09-12T14:30:02.950665
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_029T01_9000006426_48444cztM0_level2.fits modeM0/AS1A13_029T01_9000006426_48444cztM0_level2_quad_clean.evt
Size (bytes)480,012,480112,199,040
Size457.8 MB 107.0 MB
Events in quadrant A7,534,072724,232
Events in quadrant B3,219,727780,137
Events in quadrant C3,170,855733,002
Events in quadrant D3,299,814671,267

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0271033
B0147422
C0146172
D0151012

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70124035.747290%
B7012540.770108%
C7012650.926982%
D7012530.755847%

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 8012 7013 175 175 2.18% 2.50%
B 8012 7013 4 4 0.05% 0.06%
C 8012 7013 21 21 0.26% 0.30%
D 8012 7013 20 20 0.25% 0.29%

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 4282453 27019.93 754 739 158.5
A 13 248 329683 2075.81 754 739 158.5
A 13 254 12920 76.87 754 739 158.5
B 12 16 167830 1086.83 768 744 153.7
B 12 111 19275 120.54 768 744 153.7
B 11 111 17983 112.13 768 744 153.7
C 12 2 130315 718.14 759 763 180.4
C 12 250 36822 199.88 759 763 180.4
C 14 254 24887 133.72 759 763 180.4
D 12 2 103316 537.75 756 734 190.8
D 2 165 56219 290.86 756 734 190.8
D 2 249 55239 285.72 756 734 190.8

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