ASTROSAT CZTI

Data Quality Report

Orbit 31831

Creation date: 2024-06-27T20:33:16.553849
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_109T01_9000004646_31831cztM0_level2.evt modeM0/AS1A10_109T01_9000004646_31831cztM0_level2_quad_clean.evt
Size (bytes)485,400,960102,228,480
Size462.9 MB 97.5 MB
Events in quadrant A2,749,172715,383
Events in quadrant B3,971,870704,430
Events in quadrant C3,664,395673,909
Events in quadrant D3,980,071655,529

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01022
B01020
C01033
D01031

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011327154
B015388201
C014547217
D015423190

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49461082.183583%
B49471783.598140%
C49483717.497979%
D49471312.648070%

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 6300 4956 0 0 0.00% 0.00%
B 6269 4952 1 1 0.02% 0.02%
C 6272 4954 73 73 1.16% 1.47%
D 6275 4955 32 32 0.51% 0.65%

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 13 254 8319 53.97 711 701 141.1
A 3 137 6478 40.93 711 701 141.1
A 13 6 6177 38.79 711 701 141.1
B 6 159 1250897 9662.6 688 673 129.4
B 10 245 17837 132.66 688 673 129.4
B 12 111 14804 109.21 688 673 129.4
C 3 233 542912 3519.77 664 672 154.1
C 0 10 373318 2418.91 664 672 154.1
C 14 238 122776 792.6 664 672 154.1
D 8 195 1044810 6485.42 687 673 161.0
D 12 218 106474 657.16 687 673 161.0
D 12 233 83779 516.19 687 673 161.0

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