ASTROSAT CZTI

Data Quality Report

Orbit 14266

Creation date: 2024-06-27T16:52:41.044220
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_014T01_9000002104_14266cztM0_level2.evt modeM0/AS1G08_014T01_9000002104_14266cztM0_level2_quad_clean.evt
Size (bytes)1,187,233,920214,188,480
Size1.1 GB 204.3 MB
Events in quadrant A8,071,4791,396,400
Events in quadrant B8,341,5411,396,765
Events in quadrant C8,158,0641,315,701
Events in quadrant D10,318,5811,289,824

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0241

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03262
B03262
C03262
D03262

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A034525124
B035183131
C033820120
D041144189

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15776770.488083%
B157692581.636122%
C15774570.361354%
D157704102.599873%

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 18326 15789 4 4 0.02% 0.03%
B 18324 15784 68 68 0.37% 0.43%
C 18327 15791 1 1 0.01% 0.01%
D 18323 15786 320 320 1.75% 2.03%

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 357280 937.33 1890 1848 379.2
A 12 189 234032 612.3 1890 1848 379.2
A 11 29 177698 463.74 1890 1848 379.2
B 0 229 568812 1597.83 1880 1836 354.8
B 0 182 127358 353.74 1880 1836 354.8
B 10 245 107923 298.97 1880 1836 354.8
C 3 233 1018785 2395.74 1828 1838 424.5
C 13 61 12977 26.24 1828 1838 424.5
C 10 22 10492 20.39 1828 1838 424.5
D 13 122 1219725 2852.57 1817 1776 427.0
D 8 195 933447 2182.08 1817 1776 427.0
D 5 222 621777 1452.11 1817 1776 427.0

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