ASTROSAT CZTI

Data Quality Report

Orbit 31127

Creation date: 2024-06-27T20:23:57.538756
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/AS1T04_018T01_9000004494_31127cztM0_level2.evt modeM0/AS1T04_018T01_9000004494_31127cztM0_level2_quad_clean.evt
Size (bytes)505,045,44085,311,360
Size481.6 MB 81.4 MB
Events in quadrant A3,024,199546,148
Events in quadrant B5,084,816537,097
Events in quadrant C3,216,138524,971
Events in quadrant D3,526,698519,321

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133141
B0200191
C0136831
D0149381

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6539380.581129%
B65391211.850436%
C65391312.003364%
D6539761.162257%

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 6899 6540 0 0 0.00% 0.00%
B 6899 6540 7 7 0.10% 0.11%
C 6899 6540 14 14 0.20% 0.21%
D 6899 6540 29 29 0.42% 0.44%

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 11061 65.52 782 767 157.1
A 3 137 7949 45.71 782 767 157.1
A 0 226 6510 36.55 782 767 157.1
B 6 159 1866888 12560.14 773 753 148.6
B 0 183 72124 480.37 773 753 148.6
B 0 230 33390 219.67 773 753 148.6
C 14 238 121595 681.81 749 751 177.2
C 0 10 93929 525.72 749 751 177.2
C 15 208 51690 287.4 749 751 177.2
D 8 195 422629 2352.74 753 731 179.3
D 2 250 122972 681.69 753 731 179.3
D 13 174 55839 307.31 753 731 179.3

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