ASTROSAT CZTI

Data Quality Report

Orbit 46866

Creation date: 2024-06-27T23:28:41.355338
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_053T01_9000006274_46866cztM0_level2.fits modeM0/AS1A13_053T01_9000006274_46866cztM0_level2_quad_clean.evt
Size (bytes)505,373,760105,756,480
Size482.0 MB 100.9 MB
Events in quadrant A6,151,621723,876
Events in quadrant B4,202,451738,327
Events in quadrant C2,804,776712,287
Events in quadrant D5,072,142599,061

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224551
B0164621
C0127141
D0192457

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61452133.466233%
B61452413.921888%
C6146430.699642%
D614365810.711379%

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 7375 6146 32 32 0.43% 0.52%
B 7375 6146 119 119 1.61% 1.94%
C 7376 6147 15 15 0.20% 0.24%
D 7375 6145 532 532 7.21% 8.66%

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 3321313 22602.46 715 703 146.9
A 13 248 18902 123.88 715 703 146.9
A 9 191 16397 106.82 715 703 146.9
B 5 173 721178 5231.64 708 686 137.7
B 3 112 604400 4383.69 708 686 137.7
B 0 183 24071 169.8 708 686 137.7
C 1 241 43439 265.79 695 698 160.8
C 12 2 26672 161.52 695 698 160.8
C 0 207 15269 90.61 695 698 160.8
D 1 52 2028348 12060.45 674 653 168.1
D 11 192 154875 917.29 674 653 168.1
D 12 233 115987 685.99 674 653 168.1

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