ASTROSAT CZTI

Data Quality Report

Orbit 16208

Creation date: 2024-06-27T17:19:20.209936
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/AS1T02_109T01_9000002386_16208cztM0_level2.evt modeM0/AS1T02_109T01_9000002386_16208cztM0_level2_quad_clean.evt
Size (bytes)628,957,44093,090,240
Size599.8 MB 88.8 MB
Events in quadrant A3,382,610598,820
Events in quadrant B3,351,994615,960
Events in quadrant C3,247,051585,069
Events in quadrant D8,615,251554,503

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142863
B0140802
C0137912
D0303132

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6664761.140456%
B6664560.840336%
C6664440.660264%
D6664128519.282713%

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 7790 6666 28 28 0.36% 0.42%
B 7790 6666 7 7 0.09% 0.11%
C 7790 6666 0 0 0.00% 0.00%
D 7790 6666 1049 1049 13.47% 15.74%

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 4 2 111939 673.28 816 801 165.1
A 15 174 81993 491.87 816 801 165.1
A 8 247 53160 317.2 816 801 165.1
B 0 198 67945 433.31 815 794 155.0
B 3 64 23819 148.57 815 794 155.0
B 4 190 20971 130.2 815 794 155.0
C 14 238 119728 659.23 777 784 180.4
C 3 233 66454 363.97 777 784 180.4
C 7 247 20299 108.16 777 784 180.4
D 1 52 5476430 31099.45 718 694 176.1
D 2 233 414457 2349.97 718 694 176.1
D 2 234 22302 122.72 718 694 176.1

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