ASTROSAT CZTI

Data Quality Report

Orbit 04987

Creation date: 2024-06-27T14:49:46.166626
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_115T01_9000000634_04987cztM0_level2.evt modeM0/AS1G05_115T01_9000000634_04987cztM0_level2_quad_clean.evt
Size (bytes)68,204,16017,536,320
Size65.0 MB 16.7 MB
Events in quadrant A514,520110,981
Events in quadrant B507,909112,447
Events in quadrant C476,595113,526
Events in quadrant D485,094106,415

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02764380
B02775389
C02649334
D02766451

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0282
B0286
C0286
D0282

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A114220.175131%
B115230.260417%
C115700.000000%
D112720.177462%

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 1323 1168 1 1 0.08% 0.09%
B 1323 1185 1 1 0.08% 0.08%
C 1322 1193 0 0 0.00% 0.00%
D 1323 1164 2 2 0.15% 0.17%

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 59365 2251.81 118 115 26.3
A 0 226 1159 39.68 118 115 26.3
A 12 194 1156 39.56 118 115 26.3
B 0 219 35448 1416.69 121 117 24.9
B 12 111 2170 82.32 121 117 24.9
B 11 111 1668 62.19 121 117 24.9
C 13 61 956 28.19 121 121 29.6
C 9 54 780 22.25 121 121 29.6
C 8 222 717 20.12 121 121 29.6
D 13 235 24290 794.51 117 114 30.4
D 2 234 10535 342.47 117 114 30.4
D 7 67 3698 117.78 117 114 30.4

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