ASTROSAT CZTI

Data Quality Report

Orbit 06356

Creation date: 2024-06-27T15:06:07.802304
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/AS1A02_124T01_9000000842_06356cztM0_level2.evt modeM0/AS1A02_124T01_9000000842_06356cztM0_level2_quad_clean.evt
Size (bytes)530,196,48093,666,240
Size505.6 MB 89.3 MB
Events in quadrant A3,965,566585,738
Events in quadrant B3,564,623599,622
Events in quadrant C3,257,639592,195
Events in quadrant D4,790,347567,637

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161783
B0152342
C0145852
D0190182

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70522092.963698%
B70521912.708452%
C70521121.588202%
D70522944.169030%

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 7947 7053 64 64 0.81% 0.91%
B 7947 7053 40 40 0.50% 0.57%
C 7947 7053 0 0 0.00% 0.00%
D 7947 7053 120 120 1.51% 1.70%

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 273488 1612.45 833 813 169.1
A 15 236 245279 1445.64 833 813 169.1
A 8 15 206965 1219.07 833 813 169.1
B 0 228 138603 861.98 838 817 159.8
B 4 81 80185 496.52 838 817 159.8
B 0 219 53845 331.74 838 817 159.8
C 4 254 72696 383.95 814 816 187.2
C 13 61 6541 30.58 814 816 187.2
C 1 16 5755 26.38 814 816 187.2
D 11 241 627298 3184.14 811 787 196.8
D 12 220 613704 3115.05 811 787 196.8
D 10 15 121583 613.93 811 787 196.8

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