ASTROSAT CZTI

Data Quality Report

Orbit 20190207_A05_160T02_9000002710_level2

Creation date: 2019-02-09T11:02:07.634078
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/AS1A05_160T02_9000002710cztM0_level2_bc.evt modeM0/AS1A05_160T02_9000002710cztM0_level2_quad_clean.evt
Size (bytes)3,795,984,0001,254,798,720
Size3.5 GB 1.2 GB
Events in quadrant A21,690,5097,901,649
Events in quadrant B22,698,1077,974,051
Events in quadrant C27,181,4527,675,854
Events in quadrant D36,526,6077,546,955

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020620
B020620
C020620
D020620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02119830
B02156540
C02370820
D02628690

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10076813991.388338%
B10076817281.714830%
C10076841524.120356%
D10076837383.709511%

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 115813 100773 20 20 0.02% 0.02%
B 115813 100772 8 8 0.01% 0.01%
C 115813 100768 141 141 0.12% 0.14%
D 115813 100770 584 584 0.50% 0.58%

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 15 174 560477 476.36 5402 5310 1165.4
A 4 2 347678 293.77 5402 5310 1165.4
A 0 226 35809 26.17 5402 5310 1165.4
B 7 220 537333 524.77 5409 5269 1013.9
B 0 189 315579 306.05 5409 5269 1013.9
B 0 229 282005 272.94 5409 5269 1013.9
C 4 254 7298732 6132.44 5129 5107 1189.4
C 3 233 76758 60.24 5129 5107 1189.4
C 8 128 34805 24.97 5129 5107 1189.4
D 7 238 7947364 6500.2 5287 5103 1221.8
D 5 222 4192148 3426.81 5287 5103 1221.8
D 10 70 886123 721.05 5287 5103 1221.8

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