ASTROSAT CZTI

Data Quality Report

Orbit 16475

Creation date: 2024-06-27T17:23:09.275026
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/AS1C04_007T03_9000002436_16475cztM0_level2.evt modeM0/AS1C04_007T03_9000002436_16475cztM0_level2_quad_clean.evt
Size (bytes)525,225,60094,812,480
Size500.9 MB 90.4 MB
Events in quadrant A3,456,339626,952
Events in quadrant B5,661,511575,645
Events in quadrant C3,212,844621,760
Events in quadrant D3,144,502604,287

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160081648
B0241763366
C0146691396
D0152341651

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014414
B014412
C01448
D014420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B061
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63502233.511811%
B6187151324.454501%
C6400971.515625%
D6360741.163522%

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 7606 6836 99 99 1.30% 1.45%
B 7600 6636 1037 1037 13.64% 15.63%
C 7610 6879 0 0 0.00% 0.00%
D 7598 6853 20 20 0.26% 0.29%

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 15 174 455170 2850.48 781 765 159.4
A 0 226 6674 37.07 781 765 159.4
A 12 194 5743 31.23 781 765 159.4
B 5 65 2616611 19404.61 698 683 134.8
B 15 35 140092 1034.12 698 683 134.8
B 3 209 52189 382.06 698 683 134.8
C 3 233 138633 776.37 753 758 177.6
C 14 238 116984 654.46 753 758 177.6
C 7 247 22543 122.67 753 758 177.6
D 2 33 117648 625.17 760 740 187.0
D 1 52 69205 366.12 760 740 187.0
D 10 70 40902 214.77 760 740 187.0

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