ASTROSAT CZTI

Data Quality Report

Orbit 44687

Creation date: 2024-06-27T23:05:17.023840
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/AS1A13_072T01_9000006008_44687cztM0_level2.fits modeM0/AS1A13_072T01_9000006008_44687cztM0_level2_quad_clean.evt
Size (bytes)463,268,160103,947,840
Size441.8 MB 99.1 MB
Events in quadrant A4,831,276692,341
Events in quadrant B3,155,671724,831
Events in quadrant C2,867,252684,424
Events in quadrant D5,791,849594,527

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197583
B0139401
C0132751
D0217931

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64711312.024417%
B6472701.081582%
C6472390.602596%
D64725478.451792%

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 7456 6472 20 20 0.27% 0.31%
B 7457 6473 10 10 0.13% 0.15%
C 7457 6473 3 3 0.04% 0.05%
D 7457 6473 418 418 5.61% 6.46%

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 10 83 1910724 12725.55 720 704 150.1
A 0 243 60157 396.11 720 704 150.1
A 15 223 43313 283.88 720 704 150.1
B 0 186 152563 1073.89 719 695 141.4
B 0 183 48757 339.86 719 695 141.4
B 4 171 26223 180.51 719 695 141.4
C 14 254 44365 261.44 712 716 167.0
C 1 3 19086 110.03 712 716 167.0
C 3 233 12826 72.53 712 716 167.0
D 1 52 1117169 6493.89 687 665 171.9
D 13 249 1023434 5948.7 687 665 171.9
D 2 249 485724 2821.23 687 665 171.9

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