ASTROSAT CZTI

Data Quality Report

Orbit 18512

Creation date: 2024-06-27T17:50:49.909980
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/AS1A05_187T03_9000002748_18512cztM0_level2.evt modeM0/AS1A05_187T03_9000002748_18512cztM0_level2_quad_clean.evt
Size (bytes)566,343,36096,932,160
Size540.1 MB 92.4 MB
Events in quadrant A4,794,916593,631
Events in quadrant B3,415,710683,551
Events in quadrant C3,341,105636,931
Events in quadrant D5,173,350581,437

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183492
B0140562
C0139222
D0197472

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A629478612.488084%
B62941121.779473%
C62931121.779755%
D629379512.633084%

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 7613 6293 685 685 9.00% 10.89%
B 7614 6294 11 11 0.14% 0.17%
C 7613 6293 0 0 0.00% 0.00%
D 7613 6293 706 706 9.27% 11.22%

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 1703545 10709.66 791 776 159.0
A 14 238 18003 108.35 791 776 159.0
A 11 47 12704 75.02 791 776 159.0
B 15 222 26388 161.91 846 827 157.9
B 7 220 18521 112.08 846 827 157.9
B 12 111 17745 107.16 846 827 157.9
C 14 238 127686 680.09 807 813 186.6
C 3 233 59097 312.43 807 813 186.6
C 13 61 5839 26.94 807 813 186.6
D 14 34 1627902 8471.25 787 765 192.1
D 13 168 199759 1036.01 787 765 192.1
D 7 238 159969 828.85 787 765 192.1

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