ASTROSAT CZTI

Data Quality Report

Orbit 38174

Creation date: 2024-06-27T21:49:20.341581
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/AS1A07_145T01_9000005370_38174cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38174cztM0_level2_quad_clean.evt
Size (bytes)514,995,84084,772,800
Size491.1 MB 80.8 MB
Events in quadrant A2,782,358634,888
Events in quadrant B2,760,754651,854
Events in quadrant C2,571,168625,857
Events in quadrant D10,550,710295,290

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112823
B0114712
C0105692
D0349072

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5127180.351083%
B5127571.111761%
C5127120.234055%
D5127278954.398284%

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 7219 5128 13 13 0.18% 0.25%
B 7218 5127 36 36 0.50% 0.70%
C 7219 5128 6 6 0.08% 0.12%
D 7219 5127 3202 3202 44.36% 62.45%

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 353360 2924.61 601 590 120.6
A 9 143 39912 326.0 601 590 120.6
A 7 3 31625 257.29 601 590 120.6
B 4 171 111139 968.03 600 585 114.2
B 5 184 109520 953.85 600 585 114.2
B 0 230 70557 612.68 600 585 114.2
C 15 214 218097 1600.65 586 591 135.9
C 1 23 27115 195.19 586 591 135.9
C 0 10 23266 166.87 586 591 135.9
D 12 227 6758441 61629.31 451 439 109.7
D 12 235 1838126 16758.71 451 439 109.7
D 13 249 65635 594.55 451 439 109.7

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