ASTROSAT CZTI

Data Quality Report

Orbit 19824

Creation date: 2024-06-27T18:07:32.868799
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_118T01_9000002962_19824cztM0_level2.evt modeM0/AS1T03_118T01_9000002962_19824cztM0_level2_quad_clean.evt
Size (bytes)1,303,583,040202,363,200
Size1.2 GB 193.0 MB
Events in quadrant A9,303,9741,254,325
Events in quadrant B9,169,4531,255,878
Events in quadrant C8,513,0911,202,417
Events in quadrant D11,273,2591,172,332

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03660
B03660
C03660
D03660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0393174
B0386793
C0368293
D0455413

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A180463832.122354%
B180473421.895052%
C180472651.468388%
D180474852.687427%

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 19901 18046 80 80 0.40% 0.44%
B 19902 18047 66 66 0.33% 0.37%
C 19902 18047 0 0 0.00% 0.00%
D 19902 18047 232 232 1.17% 1.29%

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 14 238 562236 1266.62 2184 2137 442.2
A 9 143 171384 382.74 2184 2137 442.2
A 5 16 69851 153.13 2184 2137 442.2
B 7 220 350133 833.63 2175 2121 417.5
B 10 245 187483 444.02 2175 2121 417.5
B 0 190 55435 127.71 2175 2121 417.5
C 14 238 321798 647.96 2099 2114 493.4
C 13 61 14809 25.73 2099 2114 493.4
C 3 233 6887 9.67 2099 2114 493.4
D 1 52 2506311 4841.07 2123 2059 517.3
D 7 238 376096 723.07 2123 2059 517.3
D 12 17 145780 277.83 2123 2059 517.3

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