ASTROSAT CZTI

Data Quality Report

Orbit 03439

Creation date: 2024-06-27T14:29:01.914643
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/AS1G05_167T01_9000000456_03439cztM0_level2.evt modeM0/AS1G05_167T01_9000000456_03439cztM0_level2_quad_clean.evt
Size (bytes)528,719,04070,151,040
Size504.2 MB 66.9 MB
Events in quadrant A3,318,323414,928
Events in quadrant B4,109,179413,519
Events in quadrant C4,988,187408,787
Events in quadrant D3,122,379400,115

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145823
B0165452
C0197192
D0143732

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69831031.475011%
B69831572.248317%
C69836829.766576%
D6983751.074037%

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 7848 6985 0 0 0.00% 0.00%
B 7848 6985 45 45 0.57% 0.64%
C 7847 6983 538 538 6.86% 7.70%
D 7848 6985 5 5 0.06% 0.07%

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 15 249 60123 343.75 829 810 172.5
A 0 50 46562 265.16 829 810 172.5
A 12 194 8757 46.05 829 810 172.5
B 14 167 523143 3213.43 832 812 162.5
B 15 204 312818 1919.49 832 812 162.5
B 0 228 12093 69.4 832 812 162.5
C 1 192 1953799 10765.11 772 776 181.4
C 7 220 10592 54.1 772 776 181.4
C 13 61 6431 31.17 772 776 181.4
D 13 223 19778 97.86 798 773 194.2
D 5 233 18930 93.49 798 773 194.2
D 9 85 18121 89.33 798 773 194.2

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