ASTROSAT CZTI

Data Quality Report

Orbit 23142

Creation date: 2024-06-27T18:50:24.598099
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/AS1T03_173T01_9000003416_23142cztM0_level2.evt modeM0/AS1T03_173T01_9000003416_23142cztM0_level2_quad_clean.evt
Size (bytes)442,774,08091,753,920
Size422.3 MB 87.5 MB
Events in quadrant A3,046,723596,273
Events in quadrant B3,089,286603,906
Events in quadrant C3,394,339576,148
Events in quadrant D3,456,819568,826

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131791
B0132891
C0142501
D0145961

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6204460.741457%
B6205570.918614%
C62051492.401289%
D62051272.046737%

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 7359 6204 0 0 0.00% 0.00%
B 7360 6205 0 0 0.00% 0.00%
C 7360 6205 28 28 0.38% 0.45%
D 7360 6205 69 69 0.94% 1.11%

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 6 16 36801 230.96 781 765 156.0
A 13 254 9848 58.21 781 765 156.0
A 0 226 6829 38.87 781 765 156.0
B 0 190 45498 307.89 776 757 145.3
B 12 111 16861 110.82 776 757 145.3
B 11 111 14834 96.87 776 757 145.3
C 0 10 168506 962.34 749 755 174.3
C 14 238 119593 681.74 749 755 174.3
C 8 208 89528 509.26 749 755 174.3
D 12 233 238999 1319.22 759 739 180.6
D 1 52 163742 902.53 759 739 180.6
D 13 153 46367 252.64 759 739 180.6

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