ASTROSAT CZTI

Data Quality Report

Orbit 48415

Creation date: 2024-09-10T09:10:40.916771
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_029T01_9000006426_48415cztM0_level2.fits modeM0/AS1A13_029T01_9000006426_48415cztM0_level2_quad_clean.evt
Size (bytes)509,057,280111,939,840
Size485.5 MB 106.8 MB
Events in quadrant A7,575,404733,008
Events in quadrant B4,114,478755,781
Events in quadrant C3,026,257742,829
Events in quadrant D3,581,779668,317

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0272011
B0172511
C0143511
D0158751

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70313404.835727%
B70313114.423268%
C7032260.369738%
D7032831.180319%

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 8041 7032 139 139 1.73% 1.98%
B 8041 7032 184 184 2.29% 2.62%
C 8042 7033 1 1 0.01% 0.01%
D 8042 7033 63 63 0.78% 0.90%

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 4164873 26278.05 751 735 158.5
A 0 31 267589 1684.0 751 735 158.5
A 13 248 221718 1394.53 751 735 158.5
B 12 16 1125870 7584.48 751 728 148.3
B 12 111 18870 122.29 751 728 148.3
B 11 111 17475 112.89 751 728 148.3
C 15 208 35309 190.9 758 762 181.0
C 12 2 18941 100.46 758 762 181.0
C 9 237 11987 62.03 758 762 181.0
D 12 2 214423 1135.73 747 722 188.2
D 5 222 138743 733.52 747 722 188.2
D 12 221 90453 476.88 747 722 188.2

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