ASTROSAT CZTI

Data Quality Report

Orbit 48620

Creation date: 2024-09-24T05:14:00.992297
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_037T01_9000006436_48620cztM0_level2.fits modeM0/AS1A13_037T01_9000006436_48620cztM0_level2_quad_clean.evt
Size (bytes)423,696,960104,368,320
Size404.1 MB 99.5 MB
Events in quadrant A6,787,536667,580
Events in quadrant B2,929,324730,053
Events in quadrant C2,679,171701,000
Events in quadrant D2,802,028625,560

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0245332
B0132772
C0126962
D0131452

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62503395.424000%
B6250661.056000%
C6250140.224000%
D6250250.400000%

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 7460 6251 207 207 2.77% 3.31%
B 7460 6251 17 17 0.23% 0.27%
C 7460 6251 0 0 0.00% 0.00%
D 7460 6251 12 12 0.16% 0.19%

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 4001825 28410.13 673 660 140.8
A 13 248 99765 703.69 673 660 140.8
A 7 3 75787 533.44 673 660 140.8
B 12 16 120537 892.75 692 671 134.3
B 5 255 27477 199.65 692 671 134.3
B 5 171 21519 155.27 692 671 134.3
C 13 61 4525 23.6 686 688 162.6
C 14 254 4262 21.99 686 688 162.6
C 12 249 3622 18.05 686 688 162.6
D 10 199 80262 474.24 672 650 167.9
D 10 204 38859 227.61 672 650 167.9
D 2 249 33052 193.01 672 650 167.9

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