ASTROSAT CZTI

Data Quality Report

Orbit 31071

Creation date: 2024-06-27T20:23:00.817067
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/AS1C06_002T01_9000004490_31071cztM0_level2.evt modeM0/AS1C06_002T01_9000004490_31071cztM0_level2_quad_clean.evt
Size (bytes)739,054,080136,782,720
Size704.8 MB 130.4 MB
Events in quadrant A4,247,060895,866
Events in quadrant B7,368,277883,265
Events in quadrant C4,546,433864,722
Events in quadrant D5,582,481844,526

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190632
B0291382
C0196282
D0232082

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01900
B01900
C01900
D01900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9436580.614667%
B94362382.522255%
C94361321.398898%
D94361141.208139%

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 9901 9437 0 0 0.00% 0.00%
B 9901 9437 72 72 0.73% 0.76%
C 9901 9437 4 4 0.04% 0.04%
D 9901 9437 67 67 0.68% 0.71%

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 17660 74.92 1100 1076 221.4
A 3 137 11405 46.66 1100 1076 221.4
A 0 226 9360 37.42 1100 1076 221.4
B 6 159 2659626 12878.79 1083 1054 206.4
B 5 172 284296 1372.09 1083 1054 206.4
B 0 190 45620 215.89 1083 1054 206.4
C 0 10 191523 771.71 1053 1055 246.8
C 14 238 169921 684.19 1053 1055 246.8
C 15 208 28730 112.13 1053 1055 246.8
D 8 195 755390 3024.94 1057 1028 249.4
D 1 52 218937 873.8 1057 1028 249.4
D 13 174 162492 647.46 1057 1028 249.4

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