ASTROSAT CZTI

Data Quality Report

Orbit 31727

Creation date: 2024-06-27T20:31:59.501304
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/AS1T04_034T01_9000004632_31727cztM0_level2.evt modeM0/AS1T04_034T01_9000004632_31727cztM0_level2_quad_clean.evt
Size (bytes)740,157,12065,730,240
Size705.9 MB 62.7 MB
Events in quadrant A7,187,717363,960
Events in quadrant B6,045,798404,095
Events in quadrant C4,028,981385,084
Events in quadrant D4,718,528386,625

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260212
B0221952
C0161782
D0186742

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6458123319.092598%
B64583685.698359%
C64583074.753794%
D64591121.734015%

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 7683 6459 809 809 10.53% 12.53%
B 7683 6459 122 122 1.59% 1.89%
C 7683 6459 120 120 1.56% 1.86%
D 7684 6460 43 43 0.56% 0.67%

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 0 13 3988201 24571.65 829 818 162.3
A 13 254 11209 64.03 829 818 162.3
A 3 137 7654 42.13 829 818 162.3
B 6 159 1716290 10354.31 880 860 165.7
B 4 80 660136 3979.38 880 860 165.7
B 0 229 124700 747.5 880 860 165.7
C 0 10 504689 2569.72 850 859 196.1
C 14 238 138672 702.9 850 859 196.1
C 3 233 33605 167.02 850 859 196.1
D 8 195 1111658 5336.6 884 865 208.1
D 13 249 106398 507.01 884 865 208.1
D 12 233 99531 474.02 884 865 208.1

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