ASTROSAT CZTI

Data Quality Report

Orbit 35951

Creation date: 2022-06-09T04:51:10.229802
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/AS1A11_080T01_9000005146_35951cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35951cztM0_level2_quad_clean.evt
Size (bytes)785,142,72080,887,680
Size748.8 MB 77.1 MB
Events in quadrant A2,702,096586,932
Events in quadrant B13,345,471363,208
Events in quadrant C3,710,319559,394
Events in quadrant D3,639,545544,975

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115822
B0434331
C0145021
D0149061

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A562780.142172%
B5627550797.867425%
C56272484.407322%
D56271352.399147%

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 7150 5628 0 0 0.00% 0.00%
B 7150 5628 5068 5068 70.88% 90.05%
C 7150 5628 203 203 2.84% 3.61%
D 7150 5628 93 93 1.30% 1.65%

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 140929 1036.89 657 646 135.3
A 13 6 12965 91.05 657 646 135.3
A 13 254 8873 60.81 657 646 135.3
B 5 14 3573386 45158.53 406 397 79.1
B 5 31 3531023 44623.11 406 397 79.1
B 5 15 3523187 44524.08 406 397 79.1
C 9 187 770257 5198.59 626 632 148.0
C 15 214 231110 1556.81 626 632 148.0
C 9 69 159656 1074.16 626 632 148.0
D 1 52 289501 1861.86 629 615 155.2
D 2 31 272748 1753.89 629 615 155.2
D 10 118 178813 1148.48 629 615 155.2

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