ASTROSAT CZTI

Data Quality Report

Orbit 20200320_A07_010T12_9000003582_level2

Creation date: 2020-03-27T10:57:57.871541
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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_010T12_9000003582cztM0_level2_bc.evt modeM0/AS1A07_010T12_9000003582cztM0_level2_quad_clean.evt
Size (bytes)2,572,663,680940,129,920
Size2.4 GB 896.6 MB
Events in quadrant A14,117,8236,144,573
Events in quadrant B15,252,0526,224,046
Events in quadrant C16,157,1335,992,675
Events in quadrant D28,093,5315,790,919

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01319510
B01368300
C01412230
D01781710

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012880
B012880
C012880
D012880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01110
B01110
C01110
D01110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A630507811.238699%
B6305011721.858842%
C6305013352.117367%
D6305018632.954798%

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 74300 63047 19 19 0.03% 0.03%
B 74300 63045 46 46 0.06% 0.07%
C 74300 63047 31 31 0.04% 0.05%
D 74300 63046 352 352 0.47% 0.56%

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 357442 462.8 3556 3503 764.8
A 13 254 95865 120.77 3556 3503 764.8
A 3 1 33332 39.0 3556 3503 764.8
B 0 245 636303 962.71 3581 3520 657.3
B 12 17 198950 297.33 3581 3520 657.3
B 0 229 190421 284.35 3581 3520 657.3
C 7 247 1528608 1900.92 3426 3427 802.3
C 2 16 1134668 1409.93 3426 3427 802.3
C 0 239 259927 319.69 3426 3427 802.3
D 8 195 8527508 10491.53 3483 3367 812.5
D 7 238 3634335 4469.0 3483 3367 812.5
D 1 52 1479628 1816.99 3483 3367 812.5

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