ASTROSAT CZTI

Data Quality Report

Orbit 29634

Creation date: 2024-06-27T20:06:17.064378
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_286T01_9000004268_29634cztM0_level2.evt modeM0/AS1T03_286T01_9000004268_29634cztM0_level2_quad_clean.evt
Size (bytes)535,046,400108,766,080
Size510.3 MB 103.7 MB
Events in quadrant A3,307,964708,221
Events in quadrant B3,382,553725,789
Events in quadrant C3,551,364700,443
Events in quadrant D5,471,453656,319

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148181
B0148891
C0152971
D0212431

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7219821.135891%
B72201201.662050%
C72202513.476454%
D72194736.552154%

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 7569 7220 0 0 0.00% 0.00%
B 7570 7221 2 2 0.03% 0.03%
C 7570 7221 7 7 0.09% 0.10%
D 7569 7220 419 419 5.54% 5.80%

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 12 96 69611 408.93 839 820 168.2
A 13 254 12369 68.65 839 820 168.2
A 3 137 8609 46.3 839 820 168.2
B 0 230 28277 171.31 840 815 160.3
B 0 229 24433 147.33 840 815 160.3
B 0 190 22276 133.88 840 815 160.3
C 14 238 191747 1018.15 806 810 187.5
C 14 254 89613 473.53 806 810 187.5
C 10 22 85706 452.7 806 810 187.5
D 7 238 1111887 5915.04 796 773 187.8
D 7 80 465117 2471.95 796 773 187.8
D 8 195 428869 2278.98 796 773 187.8

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