ASTROSAT CZTI

Data Quality Report

Orbit 23321

Creation date: 2024-06-27T18:52:48.496063
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/AS1A07_148T05_9000003446_23321cztM0_level2.evt modeM0/AS1A07_148T05_9000003446_23321cztM0_level2_quad_clean.evt
Size (bytes)518,322,24088,441,920
Size494.3 MB 84.3 MB
Events in quadrant A3,648,484561,373
Events in quadrant B3,432,346567,604
Events in quadrant C4,556,077541,386
Events in quadrant D3,606,562541,536

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151362
B0142542
C0179962
D0150933

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66881942.900718%
B66891502.242488%
C66892043.049783%
D66881532.287679%

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 8823 6690 29 29 0.33% 0.43%
B 8824 6690 0 0 0.00% 0.00%
C 8824 6690 7 7 0.08% 0.10%
D 8823 6689 30 30 0.34% 0.45%

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 6 16 294809 1687.44 869 853 174.2
A 13 254 11211 59.46 869 853 174.2
A 0 226 7614 38.81 869 853 174.2
B 12 111 19692 114.07 865 844 165.2
B 11 111 17546 101.08 865 844 165.2
B 14 111 14874 84.91 865 844 165.2
C 10 9 1017659 5204.53 837 844 195.4
C 14 238 132041 671.53 837 844 195.4
C 2 16 78976 399.92 837 844 195.4
D 1 52 150772 718.74 856 834 208.6
D 13 249 96917 460.58 856 834 208.6
D 12 233 76624 363.31 856 834 208.6

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