ASTROSAT CZTI

Data Quality Report

Orbit 25890

Creation date: 2024-06-27T19:22:31.049050
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/AS1A07_068T01_9000003756_25890cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25890cztM0_level2_quad_clean.evt
Size (bytes)474,209,28088,876,800
Size452.2 MB 84.8 MB
Events in quadrant A3,677,676567,392
Events in quadrant B3,260,303573,985
Events in quadrant C3,309,139544,664
Events in quadrant D3,665,257544,455

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149550
B0137330
C0139480
D0150840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6612741.119177%
B6612811.225045%
C66131181.784364%
D6613961.451686%

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 7512 6613 4 4 0.05% 0.06%
B 7512 6613 3 3 0.04% 0.05%
C 7513 6614 0 0 0.00% 0.00%
D 7513 6614 38 38 0.51% 0.57%

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 0 13 483168 2886.78 827 810 167.1
A 13 254 9081 49.5 827 810 167.1
A 3 137 7776 41.69 827 810 167.1
B 10 245 29508 182.51 817 795 157.3
B 12 111 19239 117.24 817 795 157.3
B 11 111 17900 108.73 817 795 157.3
C 14 238 127074 679.32 789 793 185.9
C 3 233 103430 552.13 789 793 185.9
C 13 61 5399 24.78 789 793 185.9
D 1 52 512442 2679.35 800 781 191.0
D 7 80 109557 569.61 800 781 191.0
D 2 234 26101 132.59 800 781 191.0

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