ASTROSAT CZTI

Data Quality Report

Orbit 14541

Creation date: 2024-06-27T16:56:38.409164
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/AS1G08_081T01_9000002144_14541cztM0_level2.evt modeM0/AS1G08_081T01_9000002144_14541cztM0_level2_quad_clean.evt
Size (bytes)477,789,12071,277,120
Size455.7 MB 68.0 MB
Events in quadrant A3,648,182433,737
Events in quadrant B3,477,136420,929
Events in quadrant C3,616,534412,607
Events in quadrant D3,269,593420,436

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149713
B0145402
C0148052
D0141332

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6746911.348948%
B6746881.304477%
C6746691.022828%
D6746640.948710%

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 7652 6748 4 4 0.05% 0.06%
B 7652 6748 5 5 0.07% 0.07%
C 7652 6748 0 0 0.00% 0.00%
D 7652 6748 1 1 0.01% 0.01%

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 8 15 334317 1970.4 838 818 169.3
A 0 23 44702 259.28 838 818 169.3
A 12 189 42282 244.98 838 818 169.3
B 0 189 40959 252.74 830 809 158.9
B 3 209 38796 239.13 830 809 158.9
B 4 48 26924 164.39 830 809 158.9
C 3 233 482894 2602.62 801 807 185.2
C 13 61 5709 26.46 801 807 185.2
C 8 128 3998 17.23 801 807 185.2
D 2 152 76540 373.93 814 791 202.6
D 12 110 51940 252.49 814 791 202.6
D 2 234 40584 196.44 814 791 202.6

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