ASTROSAT CZTI

Data Quality Report

Orbit 02474

Creation date: 2024-06-27T14:18:17.345650
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/AS1G02_018T06_9000000370_02474cztM0_level2.evt modeM0/AS1G02_018T06_9000000370_02474cztM0_level2_quad_clean.evt
Size (bytes)429,143,04060,577,920
Size409.3 MB 57.8 MB
Events in quadrant A3,052,923342,193
Events in quadrant B3,154,727355,555
Events in quadrant C3,295,487350,096
Events in quadrant D3,057,716339,020

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131703
B0133782
C0139182
D0135302

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6402290.452983%
B6402400.624805%
C6402691.077788%
D6402510.796626%

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 7667 6403 0 0 0.00% 0.00%
B 7667 6403 0 0 0.00% 0.00%
C 7667 6403 34 34 0.44% 0.53%
D 7667 6403 22 22 0.29% 0.34%

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 14 63 10934 63.1 787 770 161.1
A 12 194 8852 50.17 787 770 161.1
A 8 15 8802 49.86 787 770 161.1
B 12 0 15220 93.84 807 790 153.8
B 12 111 11160 67.43 807 790 153.8
B 15 85 10906 65.78 807 790 153.8
C 14 223 242576 1352.36 773 779 178.8
C 12 4 12569 65.94 773 779 178.8
C 10 65 10608 54.97 773 779 178.8
D 10 102 56436 308.35 758 740 180.6
D 5 172 28958 156.22 758 740 180.6
D 9 64 25580 137.52 758 740 180.6

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