ASTROSAT CZTI

Data Quality Report

Orbit 21483

Creation date: 2024-06-27T18:28:27.158638
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/AS1T03_141T01_9000003174_21483cztM0_level2.evt modeM0/AS1T03_141T01_9000003174_21483cztM0_level2_quad_clean.evt
Size (bytes)501,036,480104,644,800
Size477.8 MB 99.8 MB
Events in quadrant A3,196,629693,388
Events in quadrant B3,410,125707,252
Events in quadrant C3,202,525682,920
Events in quadrant D4,914,747623,514

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136450
B0141390
C0136850
D0189000

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6625761.147170%
B66261061.599759%
C66261001.509206%
D66266079.160881%

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 7350 6625 0 0 0.00% 0.00%
B 7351 6626 21 21 0.29% 0.32%
C 7351 6626 0 0 0.00% 0.00%
D 7351 6626 539 539 7.33% 8.13%

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 10127 56.2 829 812 165.7
A 0 226 7076 37.79 829 812 165.7
A 3 137 6754 35.85 829 812 165.7
B 3 64 89586 565.69 824 804 156.9
B 0 230 54521 342.27 824 804 156.9
B 0 190 28845 178.67 824 804 156.9
C 14 238 124371 671.64 789 795 184.0
C 13 61 5649 26.38 789 795 184.0
C 3 202 1863 5.8 789 795 184.0
D 5 222 1135424 6097.74 770 749 186.1
D 7 38 598172 3210.55 770 749 186.1
D 13 153 86708 461.94 770 749 186.1

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