ASTROSAT CZTI

Data Quality Report

Orbit 24036

Creation date: 2024-06-27T19:01:23.896196
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/AS1A07_165T01_9000003558_24036cztM0_level2.evt modeM0/AS1A07_165T01_9000003558_24036cztM0_level2_quad_clean.evt
Size (bytes)1,227,389,760341,144,640
Size1.1 GB 325.3 MB
Events in quadrant A8,270,5702,307,643
Events in quadrant B8,524,4632,350,065
Events in quadrant C8,521,7332,239,399
Events in quadrant D10,622,1342,180,743

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0368483
B0372463
C0369373
D0437953

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03680
B03680
C03680
D03680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18237590.323518%
B18238880.482509%
C182381570.860840%
D182382151.178857%

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 20132 18240 0 0 0.00% 0.00%
B 20133 18241 4 4 0.02% 0.02%
C 20133 18241 0 0 0.00% 0.00%
D 20133 18241 141 141 0.70% 0.77%

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 28559 61.72 2142 2091 428.9
A 3 137 18571 38.43 2142 2091 428.9
A 0 226 18204 37.57 2142 2091 428.9
B 12 111 48769 115.87 2145 2087 402.9
B 11 111 42764 100.96 2145 2087 402.9
B 14 111 37102 86.91 2145 2087 402.9
C 14 238 330005 681.09 2066 2070 481.5
C 7 247 102228 208.02 2066 2070 481.5
C 0 239 20735 38.77 2066 2070 481.5
D 1 52 1268769 2510.83 2082 2019 504.5
D 8 195 1233726 2441.37 2082 2019 504.5
D 2 234 85105 164.69 2082 2019 504.5

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