ASTROSAT CZTI

Data Quality Report

Orbit 20071

Creation date: 2024-06-27T18:10:53.124253
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_120T01_9000002990_20071cztM0_level2.evt modeM0/AS1T03_120T01_9000002990_20071cztM0_level2_quad_clean.evt
Size (bytes)534,251,520114,120,000
Size509.5 MB 108.8 MB
Events in quadrant A3,693,192770,625
Events in quadrant B3,765,336770,117
Events in quadrant C3,333,573745,755
Events in quadrant D4,939,206708,437

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149261
B0152201
C0137901
D0188701

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66141362.056244%
B6615961.451247%
C6615781.179138%
D66153755.668934%

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 7614 6615 55 55 0.72% 0.83%
B 7615 6616 23 23 0.30% 0.35%
C 7615 6616 2 2 0.03% 0.03%
D 7615 6616 348 348 4.57% 5.26%

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 14 238 309995 1838.62 834 821 168.2
A 15 192 81182 477.9 834 821 168.2
A 4 2 74182 436.27 834 821 168.2
B 10 245 225644 1424.8 832 814 157.8
B 7 220 132594 835.12 832 814 157.8
B 0 229 27437 168.72 832 814 157.8
C 14 238 128201 678.66 809 818 187.7
C 4 254 21335 109.31 809 818 187.7
C 4 175 21102 108.07 809 818 187.7
D 1 52 1023403 5306.56 799 779 192.7
D 7 38 799627 4145.35 799 779 192.7
D 12 218 65429 335.48 799 779 192.7

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