ASTROSAT CZTI

Data Quality Report

Orbit 01376

Creation date: 2024-06-27T14:11:45.414954
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/AS1G04_014T02_9000000232_01376cztM0_level2.evt modeM0/AS1G04_014T02_9000000232_01376cztM0_level2_quad_clean.evt
Size (bytes)1,047,144,96099,613,440
Size998.6 MB 95.0 MB
Events in quadrant A7,754,347647,673
Events in quadrant B8,653,451658,010
Events in quadrant C7,422,640647,474
Events in quadrant D7,452,483611,546

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0276432
B0302561
C0266801
D0268105

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6485230.354665%
B6485270.416345%
C6485110.169622%
D64843234.981493%

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 7676 6487 255 255 3.32% 3.93%
B 7676 6487 406 406 5.29% 6.26%
C 7676 6487 168 168 2.19% 2.59%
D 7675 6485 472 472 6.15% 7.28%

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 15 127 326311 702.89 1926 1940 461.5
A 4 32 19606 38.28 1926 1940 461.5
A 0 253 9692 16.8 1926 1940 461.5
B 8 4 594952 1233.66 2031 2044 480.6
B 12 52 159597 327.82 2031 2044 480.6
B 6 53 59083 118.68 2031 2044 480.6
C 15 241 212784 418.57 1820 1883 503.9
C 7 222 48390 92.3 1820 1883 503.9
C 9 54 22572 41.06 1820 1883 503.9
D 13 73 763896 1473.64 1669 1727 517.2
D 9 53 405106 779.93 1669 1727 517.2
D 5 82 23923 42.92 1669 1727 517.2

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