ASTROSAT CZTI

Data Quality Report

Orbit 50168

Creation date: 2025-01-07T10:24:45.401918
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/AS1C09_003T01_9000006442_50168cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50168cztM0_level2_quad_clean.evt
Size (bytes)3,448,172,160150,030,720
Size3.2 GB 143.1 MB
Events in quadrant A31,101,006975,670
Events in quadrant B10,378,9801,817,312
Events in quadrant C40,186,030179,136
Events in quadrant D44,516,799260,230

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01056932
B0441462
C01323122
D01452432

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03860
B03860
C03860
D03860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18984831143.778972%
B189845322.802360%
C189841717090.444585%
D189841628885.798567%

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 20099 18984 7965 7965 39.63% 41.96%
B 20099 18984 156 156 0.78% 0.82%
C 20099 18984 12898 12898 64.17% 67.94%
D 20099 18984 15766 15766 78.44% 83.05%

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 0 98 16507788 38594.28 1702 1658 427.7
A 8 8 2368198 5533.39 1702 1658 427.7
A 6 250 779388 1818.47 1702 1658 427.7
B 5 185 310940 748.42 1961 1894 412.9
B 9 218 254135 610.85 1961 1894 412.9
B 3 249 234265 562.73 1961 1894 412.9
C 4 111 11442393 67648.22 584 579 169.1
C 15 197 6703007 39627.22 584 579 169.1
C 15 164 2466818 14581.31 584 579 169.1
D 15 142 7640747 26057.69 854 813 293.2
D 15 168 7004679 23888.24 854 813 293.2
D 7 61 5147550 17554.09 854 813 293.2

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