ASTROSAT CZTI

Data Quality Report

Orbit 44571

Creation date: 2024-06-27T23:04:05.210058
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_003T01_9000006002_44571cztM0_level2.fits modeM0/AS1A13_003T01_9000006002_44571cztM0_level2_quad_clean.evt
Size (bytes)461,678,400110,727,360
Size440.3 MB 105.6 MB
Events in quadrant A5,166,754736,985
Events in quadrant B3,182,145763,888
Events in quadrant C4,175,539721,384
Events in quadrant D4,035,640654,825

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210322
B0141668
C0171462
D0169182

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68191532.243731%
B6819240.351958%
C68191742.551694%
D68192383.490248%

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 8719 6821 65 65 0.75% 0.95%
B 8719 6821 2 2 0.02% 0.03%
C 8719 6821 142 142 1.63% 2.08%
D 8719 6821 187 187 2.14% 2.74%

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 1973514 12356.72 763 749 159.7
A 13 248 225434 1407.35 763 749 159.7
A 8 205 11879 69.71 763 749 159.7
B 5 235 124505 818.06 763 738 151.3
B 5 172 19569 124.47 763 738 151.3
B 12 111 19149 121.69 763 738 151.3
C 14 254 582599 3305.56 749 753 176.0
C 15 208 484929 2750.68 749 753 176.0
C 2 14 101419 571.9 749 753 176.0
D 13 174 384905 2058.48 743 719 186.6
D 2 249 378224 2022.68 743 719 186.6
D 1 52 182944 976.36 743 719 186.6

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