ASTROSAT CZTI

Data Quality Report

Orbit 39853

Creation date: 2024-06-27T22:09:29.627795
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/AS1A12_022T01_9000005498_39853cztM0_level2.fits modeM0/AS1A12_022T01_9000005498_39853cztM0_level2_quad_clean.evt
Size (bytes)2,094,255,360341,533,440
Size2.0 GB 325.7 MB
Events in quadrant A11,568,6082,563,713
Events in quadrant B26,121,4861,888,929
Events in quadrant C25,021,3092,225,436
Events in quadrant D13,149,9282,178,708

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0468335
B0927344
C0894144
D0541644

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04420
B04420
C04420
D04420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A215541220.566020%
B21554598727.776747%
C21554219810.197643%
D215549634.467848%

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 31361 21559 93 93 0.30% 0.43%
B 31361 21559 4925 4925 15.70% 22.84%
C 31361 21559 2268 2268 7.23% 10.52%
D 31361 21559 790 790 2.52% 3.66%

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 1632355 3318.43 2442 2397 491.2
A 7 3 208055 418.7 2442 2397 491.2
A 13 248 163483 327.95 2442 2397 491.2
B 4 170 17492351 44023.63 2117 2062 397.3
B 5 255 85862 210.93 2117 2062 397.3
B 15 85 80318 196.97 2117 2062 397.3
C 9 187 10807457 20840.18 2264 2278 518.5
C 15 208 4300266 8289.62 2264 2278 518.5
C 15 214 882778 1698.24 2264 2278 518.5
D 7 38 1392828 2500.44 2306 2242 556.1
D 12 233 1165517 2091.7 2306 2242 556.1
D 2 250 529463 948.0 2306 2242 556.1

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