ASTROSAT CZTI

Data Quality Report

Orbit 37360

Creation date: 2024-06-27T21:38:58.941791
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/AS1A10_094T20_9000005316_37360cztM0_level2.evt modeM0/AS1A10_094T20_9000005316_37360cztM0_level2_quad_clean.evt
Size (bytes)617,129,280100,851,840
Size588.5 MB 96.2 MB
Events in quadrant A2,724,380714,845
Events in quadrant B2,939,417736,414
Events in quadrant C2,971,132738,060
Events in quadrant D9,704,336501,071

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112163
B0119283
C0117942
D0323702

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5179140.270322%
B51781031.989185%
C5179390.753041%
D5179263050.782004%

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 7151 5180 6 6 0.08% 0.12%
B 7151 5180 57 57 0.80% 1.10%
C 7151 5180 32 32 0.45% 0.62%
D 7151 5179 2396 2396 33.51% 46.26%

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 274211 2202.44 616 604 124.2
A 9 143 43619 346.26 616 604 124.2
A 13 248 9042 67.92 616 604 124.2
B 5 255 145454 1250.22 617 599 115.9
B 12 18 90903 779.4 617 599 115.9
B 0 190 68916 589.63 617 599 115.9
C 1 23 221968 1561.42 621 626 141.8
C 15 214 220016 1547.65 621 626 141.8
C 0 10 70910 495.81 621 626 141.8
D 12 235 7515977 65440.54 473 461 114.8
D 12 227 151250 1312.98 473 461 114.8
D 2 249 72838 630.21 473 461 114.8

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