ASTROSAT CZTI

Data Quality Report

Orbit 45921

Creation date: 2024-06-27T23:17:43.608694
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/AS1A13_071T03_9000006142_45921cztM0_level2.fits modeM0/AS1A13_071T03_9000006142_45921cztM0_level2_quad_clean.evt
Size (bytes)670,273,92099,578,880
Size639.2 MB 95.0 MB
Events in quadrant A5,919,550692,318
Events in quadrant B9,754,923555,444
Events in quadrant C3,005,913699,496
Events in quadrant D5,633,078617,977

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220332
B0334932
C0135552
D0212434

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64402714.208075%
B6440201631.304348%
C6440500.776398%
D64393275.078428%

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 7525 6441 91 91 1.21% 1.41%
B 7525 6440 1424 1424 18.92% 22.11%
C 7525 6441 25 25 0.33% 0.39%
D 7524 6439 245 245 3.26% 3.80%

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 10 83 3046859 20445.34 713 697 149.0
A 13 248 46311 306.15 713 697 149.0
A 0 247 25095 163.76 713 697 149.0
B 3 112 5813182 44912.07 656 636 129.4
B 10 246 1185993 9158.95 656 636 129.4
B 4 158 53461 408.17 656 636 129.4
C 14 254 151864 904.89 708 712 167.0
C 12 249 76041 450.97 708 712 167.0
C 12 2 9880 54.89 708 712 167.0
D 11 241 1768746 10043.2 693 672 176.0
D 13 249 364560 2066.99 693 672 176.0
D 2 249 298940 1694.25 693 672 176.0

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