ASTROSAT CZTI

Data Quality Report

Orbit 38417

Creation date: 2024-06-27T21:52:28.297816
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/AS1A12_018T01_9000005386_38417cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38417cztM0_level2_quad_clean.evt
Size (bytes)724,766,400156,332,160
Size691.2 MB 149.1 MB
Events in quadrant A4,985,8911,116,541
Events in quadrant B4,797,1731,131,776
Events in quadrant C4,451,4161,063,036
Events in quadrant D11,894,291795,832

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01840
B01840
C01840
D01840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0201363
B0199482
C0186404
D0416172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9033870.963135%
B9033991.095981%
C9032300.332152%
D9033206722.882763%

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 12828 9035 57 57 0.44% 0.63%
B 12828 9035 59 59 0.46% 0.65%
C 12828 9035 26 26 0.20% 0.29%
D 12828 9035 1940 1940 15.12% 21.47%

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 585683 2823.36 1042 1022 207.1
A 13 248 261666 1258.67 1042 1022 207.1
A 9 143 51350 243.04 1042 1022 207.1
B 4 232 377290 1957.77 1028 1002 192.2
B 0 183 143979 743.89 1028 1002 192.2
B 4 171 83527 429.37 1028 1002 192.2
C 15 214 378172 1638.37 1007 1012 230.2
C 14 254 121050 521.44 1007 1012 230.2
C 0 10 19101 78.58 1007 1012 230.2
D 12 235 5481839 24475.95 930 902 223.9
D 12 2 864934 3858.47 930 902 223.9
D 2 250 526968 2349.23 930 902 223.9

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