ASTROSAT CZTI

Data Quality Report

Orbit 42515

Creation date: 2024-06-27T22:41:05.583406
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/AS1C07_001T10_9000005806_42515cztM0_level2.fits modeM0/AS1C07_001T10_9000005806_42515cztM0_level2_quad_clean.evt
Size (bytes)325,892,16089,455,680
Size310.8 MB 85.3 MB
Events in quadrant A2,991,618596,170
Events in quadrant B2,615,999605,608
Events in quadrant C3,459,432583,622
Events in quadrant D2,573,122542,562

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122672
B0115822
C0137922
D0117472

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5434180.331248%
B543450.092013%
C5434220.404858%
D5434400.736106%

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 7226 5435 6 6 0.08% 0.11%
B 7226 5435 0 0 0.00% 0.00%
C 7226 5435 12 12 0.17% 0.22%
D 7226 5435 35 35 0.48% 0.64%

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 567671 4777.0 580 568 118.7
A 12 189 100663 843.15 580 568 118.7
A 2 79 38164 316.69 580 568 118.7
B 0 229 235533 2116.05 576 559 111.0
B 0 245 67036 598.66 576 559 111.0
B 5 255 22298 195.77 576 559 111.0
C 0 239 966893 7325.21 562 566 131.9
C 15 214 244523 1849.31 562 566 131.9
C 7 220 26735 198.37 562 566 131.9
D 12 6 91330 659.02 565 549 137.8
D 1 47 57319 412.12 565 549 137.8
D 7 112 46795 335.72 565 549 137.8

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