ASTROSAT CZTI

Data Quality Report

Orbit 25079

Creation date: 2024-06-27T19:13:35.513314
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/AS1T03_206T01_9000003672_25079cztM0_level2.evt modeM0/AS1T03_206T01_9000003672_25079cztM0_level2_quad_clean.evt
Size (bytes)472,841,28090,527,040
Size450.9 MB 86.3 MB
Events in quadrant A3,105,074586,011
Events in quadrant B3,427,196590,452
Events in quadrant C3,082,288562,458
Events in quadrant D4,270,108549,828

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134571
B0142531
C0133191
D0171631

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6490480.739599%
B64911031.586813%
C6491671.032198%
D6491951.463565%

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 7350 6490 0 0 0.00% 0.00%
B 7351 6491 41 41 0.56% 0.63%
C 7351 6492 1 1 0.01% 0.02%
D 7351 6491 31 31 0.42% 0.48%

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 13 34 56288 343.82 790 771 161.5
A 13 254 10603 60.89 790 771 161.5
A 3 137 7045 38.86 790 771 161.5
B 0 229 92209 611.75 783 764 149.5
B 5 172 84262 558.58 783 764 149.5
B 3 64 77349 512.34 783 764 149.5
C 14 238 119353 661.69 757 760 179.2
C 7 247 6112 29.86 757 760 179.2
C 1 16 5656 27.32 757 760 179.2
D 8 195 501557 2661.4 768 745 188.2
D 9 35 378221 2005.97 768 745 188.2
D 1 52 240115 1272.05 768 745 188.2

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