ASTROSAT CZTI

Data Quality Report

Orbit 06649

Creation date: 2024-06-27T15:09:52.746566
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/AS1A02_103T01_9000000904_06649cztM0_level2.evt modeM0/AS1A02_103T01_9000000904_06649cztM0_level2_quad_clean.evt
Size (bytes)507,274,56065,698,560
Size483.8 MB 62.7 MB
Events in quadrant A3,680,415386,913
Events in quadrant B2,897,638406,103
Events in quadrant C2,707,891396,803
Events in quadrant D5,668,523379,611

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01452217
B01244913
C01230015
D02095847

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60013295.482420%
B60021282.132622%
C60011191.983003%
D5997122020.343505%

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 6263 6009 117 117 1.87% 1.95%
B 6263 6010 0 0 0.00% 0.00%
C 6263 6010 0 0 0.00% 0.00%
D 6263 6010 867 867 13.84% 14.43%

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 8 15 721062 4914.46 700 682 146.6
A 15 236 245055 1667.12 700 682 146.6
A 3 1 9223 58.27 700 682 146.6
B 15 204 47182 331.09 713 694 140.4
B 0 214 29576 205.7 713 694 140.4
B 4 80 24386 168.73 713 694 140.4
C 8 128 14636 86.41 687 688 161.4
C 8 112 7272 40.79 687 688 161.4
C 8 144 5502 29.82 687 688 161.4
D 2 33 2922025 18876.34 627 606 154.8
D 12 221 102215 656.53 627 606 154.8
D 8 195 86083 552.29 627 606 154.8

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