ASTROSAT CZTI

Data Quality Report

Orbit 06626

Creation date: 2024-06-27T15:09:41.556567
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/AS1G06_164T01_9000000896_06626cztM0_level2.evt modeM0/AS1G06_164T01_9000000896_06626cztM0_level2_quad_clean.evt
Size (bytes)1,172,980,800212,143,680
Size1.1 GB 202.3 MB
Events in quadrant A7,315,5431,351,216
Events in quadrant B8,492,9621,337,861
Events in quadrant C7,169,2231,323,316
Events in quadrant D11,431,2861,275,607

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0335542
B0363782
C0335872
D0454582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03360
B03360
C03360
D03360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A164862831.716608%
B164864442.693194%
C164862411.461846%
D164864452.699260%

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 17131 16490 3 3 0.02% 0.02%
B 17131 16490 91 91 0.53% 0.55%
C 17131 16490 13 13 0.08% 0.08%
D 17131 16490 174 174 1.02% 1.06%

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 75943 194.21 1866 1822 381.6
A 14 111 34118 84.62 1866 1822 381.6
A 13 251 19535 46.41 1866 1822 381.6
B 4 48 299133 836.5 1871 1824 355.4
B 15 204 285301 797.58 1871 1824 355.4
B 0 219 232371 648.66 1871 1824 355.4
C 9 54 86983 204.98 1804 1803 415.5
C 1 16 23949 53.29 1804 1803 415.5
C 13 61 14491 30.53 1804 1803 415.5
D 8 195 3238611 7389.63 1801 1741 438.0
D 2 33 514339 1170.24 1801 1741 438.0
D 14 34 405323 921.36 1801 1741 438.0

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