ASTROSAT CZTI

Data Quality Report

Orbit 12750

Creation date: 2024-06-27T16:31:55.034943
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_044T01_9000001882_12750cztM0_level2.evt modeM0/AS1A04_044T01_9000001882_12750cztM0_level2_quad_clean.evt
Size (bytes)498,744,00096,759,360
Size475.6 MB 92.3 MB
Events in quadrant A3,382,887629,922
Events in quadrant B4,509,744615,795
Events in quadrant C3,118,054635,944
Events in quadrant D3,667,678610,337

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141233
B0175682
C0133642
D0150162

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62781051.672507%
B62784757.566104%
C6278560.892004%
D62781131.799936%

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 7488 6278 2 2 0.03% 0.03%
B 7488 6278 324 324 4.33% 5.16%
C 7488 6278 0 0 0.00% 0.00%
D 7488 6278 45 45 0.60% 0.72%

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 8 15 56771 332.13 836 820 168.5
A 15 239 40965 238.31 836 820 168.5
A 15 222 33403 193.42 836 820 168.5
B 4 239 1146721 7492.19 811 794 152.9
B 15 32 69891 451.76 811 794 152.9
B 0 214 28044 178.16 811 794 152.9
C 13 61 5771 26.92 800 804 184.5
C 3 202 1952 6.22 800 804 184.5
C -1 -1 -1 -1.0 800 804 184.5
D 1 52 392001 1896.38 798 782 206.3
D 2 136 130795 630.22 798 782 206.3
D 8 195 48260 230.14 798 782 206.3

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