ASTROSAT CZTI

Data Quality Report

Orbit 15917

Creation date: 2024-06-27T17:15:07.051518
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_143T01_9000002344_15917cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15917cztM0_level2_quad_clean.evt
Size (bytes)589,769,28063,100,800
Size562.4 MB 60.2 MB
Events in quadrant A7,330,411324,831
Events in quadrant B3,497,306388,287
Events in quadrant C3,352,878369,523
Events in quadrant D3,233,985367,511

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262383
B0148242
C0140712
D0140882

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6586106116.109930%
B6586671.017309%
C65861081.639842%
D6586671.017309%

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 7647 6587 778 778 10.17% 11.81%
B 7647 6587 1 1 0.01% 0.02%
C 7647 6587 0 0 0.00% 0.00%
D 7647 6587 7 7 0.09% 0.11%

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 15 239 4286343 27160.7 781 765 157.8
A 9 143 43592 271.42 781 765 157.8
A 0 226 6949 39.19 781 765 157.8
B 4 216 89400 557.4 830 809 158.9
B 5 236 43057 265.81 830 809 158.9
B 0 229 37715 232.2 830 809 158.9
C 14 238 123059 660.2 796 800 185.2
C 3 233 119613 641.59 796 800 185.2
C 13 61 5536 25.57 796 800 185.2
D 5 51 60142 297.28 813 788 199.7
D 2 234 32574 159.2 813 788 199.7
D 13 172 25173 122.13 813 788 199.7

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