ASTROSAT CZTI

Data Quality Report

Orbit 45168

Creation date: 2024-06-27T23:10:08.803310
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/AS1A13_049T05_9000006050_45168cztM0_level2.fits modeM0/AS1A13_049T05_9000006050_45168cztM0_level2_quad_clean.evt
Size (bytes)417,464,640100,506,240
Size398.1 MB 95.9 MB
Events in quadrant A4,827,294667,095
Events in quadrant B3,215,477697,510
Events in quadrant C2,832,071673,297
Events in quadrant D4,124,730597,057

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185471
B0133521
C0123831
D0162381

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5840871.489726%
B5840991.695205%
C5841330.564972%
D58412384.074645%

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 7010 5841 7 7 0.10% 0.12%
B 7010 5841 55 55 0.78% 0.94%
C 7011 5842 16 16 0.23% 0.27%
D 7011 5842 194 194 2.77% 3.32%

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 10 83 2089771 15143.62 668 654 138.0
A 13 248 75833 544.96 668 654 138.0
A 15 223 56451 404.46 668 654 138.0
B 3 112 170410 1295.12 671 650 131.1
B 4 171 168137 1277.77 671 650 131.1
B 0 246 58969 444.92 671 650 131.1
C 12 2 60292 377.38 674 679 158.0
C 15 208 54743 342.25 674 679 158.0
C 14 254 35593 221.02 674 679 158.0
D 5 235 631278 3873.52 657 638 162.8
D 1 52 386756 2371.61 657 638 162.8
D 13 249 273756 1677.55 657 638 162.8

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