ASTROSAT CZTI

Data Quality Report

Orbit 15269

Creation date: 2024-06-27T17:06:06.578888
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/AS1A04_207T01_9000002254_15269cztM0_level2.evt modeM0/AS1A04_207T01_9000002254_15269cztM0_level2_quad_clean.evt
Size (bytes)474,333,120103,443,840
Size452.4 MB 98.7 MB
Events in quadrant A3,329,243690,345
Events in quadrant B3,599,961692,815
Events in quadrant C3,772,925668,436
Events in quadrant D3,236,785642,855

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139352
B0147771
C0155481
D0138171

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6279681.082975%
B6279841.337793%
C6279460.732601%
D6279701.114827%

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 7560 6280 1 1 0.01% 0.02%
B 7560 6280 14 14 0.19% 0.22%
C 7560 6281 4 4 0.05% 0.06%
D 7560 6280 24 24 0.32% 0.38%

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 12 189 71221 423.33 824 807 166.3
A 9 143 37913 223.08 824 807 166.3
A 3 1 27825 162.43 824 807 166.3
B 3 64 124001 793.65 817 800 155.2
B 3 209 82957 529.25 817 800 155.2
B 10 16 39466 249.08 817 800 155.2
C 3 233 618412 3489.35 776 780 177.0
C 3 9 110978 622.57 776 780 177.0
C 4 254 16307 87.72 776 780 177.0
D 13 172 138964 716.66 786 762 192.8
D 7 38 47685 243.32 786 762 192.8
D 2 234 26268 132.26 786 762 192.8

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