ASTROSAT CZTI

Data Quality Report

Orbit 12896

Creation date: 2024-06-27T16:33:40.574070
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/AS1A04_116T01_9000001896_12896cztM0_level2.evt modeM0/AS1A04_116T01_9000001896_12896cztM0_level2_quad_clean.evt
Size (bytes)500,088,960117,023,040
Size476.9 MB 111.6 MB
Events in quadrant A3,478,421798,516
Events in quadrant B4,583,933752,677
Events in quadrant C3,184,775795,999
Events in quadrant D3,474,923761,883

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143323
B0177082
C0135562
D0143962

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62281302.087347%
B622866610.693642%
C6228891.429030%
D62281552.488760%

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 7560 6231 24 24 0.32% 0.39%
B 7560 6231 329 329 4.35% 5.28%
C 7560 6231 0 0 0.00% 0.00%
D 7560 6231 70 70 0.93% 1.12%

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 139044 821.4 842 828 168.3
A 8 15 34130 197.91 842 828 168.3
A 1 162 27144 156.39 842 828 168.3
B 4 239 1264340 8699.14 793 776 145.3
B 0 85 78217 533.15 793 776 145.3
B 0 197 42768 289.1 793 776 145.3
C 4 112 14439 74.78 813 818 182.1
C 13 61 5947 28.16 813 818 182.1
C 3 202 2123 7.16 813 818 182.1
D 1 52 233775 1223.7 812 789 190.4
D 10 253 73686 382.87 812 789 190.4
D 2 14 56831 294.35 812 789 190.4

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