ASTROSAT CZTI

Data Quality Report

Orbit 24511

Creation date: 2024-06-27T19:06:45.775329
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/AS1T03_183T01_9000003606_24511cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24511cztM0_level2_quad_clean.evt
Size (bytes)613,105,920134,858,880
Size584.7 MB 128.6 MB
Events in quadrant A4,487,723909,472
Events in quadrant B4,357,665916,351
Events in quadrant C3,845,138875,718
Events in quadrant D5,345,739837,419

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185472
B0181292
C0166202
D0211962

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78522322.954661%
B78524425.629139%
C78512893.681060%
D78514665.935550%

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 8287 7855 3 3 0.04% 0.04%
B 8287 7855 74 74 0.89% 0.94%
C 8286 7854 21 21 0.25% 0.27%
D 8286 7854 216 216 2.61% 2.75%

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 14 111 866605 4570.64 938 916 189.4
A 13 254 12433 60.81 938 916 189.4
A 3 137 8567 40.4 938 916 189.4
B 3 64 680229 3766.67 929 902 180.4
B 12 111 22241 118.32 929 902 180.4
B 11 111 19467 102.94 929 902 180.4
C 14 238 143884 681.61 901 906 209.8
C 2 16 102807 485.78 901 906 209.8
C 10 9 83744 394.91 901 906 209.8
D 1 52 887766 4118.32 895 867 215.4
D 12 218 411016 1904.53 895 867 215.4
D 8 195 396923 1839.09 895 867 215.4

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