ASTROSAT CZTI

Data Quality Report

Orbit 16197

Creation date: 2024-06-27T17:19:13.656739
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_16197cztM0_level2.evt modeM0/AS1T02_109T01_9000002386_16197cztM0_level2_quad_clean.evt
Size (bytes)523,031,04076,003,200
Size498.8 MB 72.5 MB
Events in quadrant A3,516,623472,462
Events in quadrant B3,746,424478,313
Events in quadrant C3,493,760455,553
Events in quadrant D4,642,473441,932

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142613
B0149002
C0140522
D0179082

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64961201.847291%
B64961412.170567%
C64961271.955049%
D64964526.958128%

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 7797 6498 4 4 0.05% 0.06%
B 7797 6498 30 30 0.38% 0.46%
C 7797 6498 0 0 0.00% 0.00%
D 7797 6497 264 264 3.39% 4.06%

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 15 157 50682 278.65 894 879 178.7
A 8 247 22454 120.71 894 879 178.7
A 9 143 12067 62.6 894 879 178.7
B 5 65 236805 1428.07 879 861 165.2
B 0 229 25596 149.71 879 861 165.2
B 3 209 24757 144.63 879 861 165.2
C 14 238 134705 691.47 842 849 193.6
C 3 233 54687 278.12 842 849 193.6
C 0 207 10810 51.46 842 849 193.6
D 2 233 1079728 5211.9 848 822 207.0
D 1 52 306057 1474.51 848 822 207.0
D 2 234 24824 115.95 848 822 207.0

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