ASTROSAT CZTI

Data Quality Report

Orbit 30464

Creation date: 2024-06-27T20:15:35.051971
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/AS1A10_121T02_9000004378_30464cztM0_level2.evt modeM0/AS1A10_121T02_9000004378_30464cztM0_level2_quad_clean.evt
Size (bytes)1,181,966,400187,758,720
Size1.1 GB 179.1 MB
Events in quadrant A7,313,7501,169,826
Events in quadrant B11,591,2591,168,366
Events in quadrant C7,739,8401,142,434
Events in quadrant D8,104,6151,136,390

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0319092
B0467322
C0326322
D0350972

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03120
B03120
C03120
D03120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A155071020.657767%
B155072101.354227%
C155072031.309086%
D15507570.367576%

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 16692 15509 12 12 0.07% 0.08%
B 16692 15509 12 12 0.07% 0.08%
C 16692 15509 7 7 0.04% 0.05%
D 16692 15509 22 22 0.13% 0.14%

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 14 239 130693 350.14 1844 1806 368.1
A 8 192 28271 71.9 1844 1806 368.1
A 13 254 27187 68.95 1844 1806 368.1
B 6 159 4279081 12273.59 1824 1778 348.5
B 0 229 44812 123.48 1824 1778 348.5
B 4 171 44350 122.16 1824 1778 348.5
C 3 233 458051 1105.38 1766 1776 412.8
C 14 238 290236 698.83 1766 1776 412.8
C 2 114 35866 82.59 1766 1776 412.8
D 13 104 543596 1168.91 1774 1741 463.6
D 8 195 346215 743.11 1774 1741 463.6
D 12 227 246638 528.3 1774 1741 463.6

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