ASTROSAT CZTI

Data Quality Report

Orbit 21627

Creation date: 2024-06-27T18:30:22.863582
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/AS1A05_094T01_9000003204_21627cztM0_level2.evt modeM0/AS1A05_094T01_9000003204_21627cztM0_level2_quad_clean.evt
Size (bytes)445,224,96087,776,640
Size424.6 MB 83.7 MB
Events in quadrant A3,070,362562,550
Events in quadrant B3,184,052569,138
Events in quadrant C3,035,901550,400
Events in quadrant D3,762,607533,794

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131681
B0133711
C0131221
D0155491

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6334410.647300%
B6334630.994632%
C6334751.184086%
D6335641.010260%

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 7384 6335 3 3 0.04% 0.05%
B 7384 6335 3 3 0.04% 0.05%
C 7384 6335 0 0 0.00% 0.00%
D 7385 6336 28 28 0.38% 0.44%

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 5 16 51611 324.69 780 762 156.6
A 13 254 8586 49.96 780 762 156.6
A 15 236 8147 47.16 780 762 156.6
B 3 64 32912 216.84 778 760 148.3
B 0 229 25911 169.63 778 760 148.3
B 12 111 17409 112.29 778 760 148.3
C 14 238 116960 666.92 744 749 174.3
C 0 207 10770 57.51 744 749 174.3
C 10 22 8741 45.87 744 749 174.3
D 7 238 334068 1829.02 751 728 182.3
D 13 168 202396 1106.54 751 728 182.3
D 2 136 143411 782.89 751 728 182.3

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