ASTROSAT CZTI

Data Quality Report

Orbit 49791

Creation date: 2024-12-12T04:11:08.655339
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/AS1A13_037T01_9000006440_49791cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49791cztM0_level2_quad_clean.evt
Size (bytes)1,172,471,04057,911,040
Size1.1 GB 55.2 MB
Events in quadrant A9,666,188539,329
Events in quadrant B6,745,723638,092
Events in quadrant C8,078,34654,260
Events in quadrant D18,335,3604,950

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0338882
B0252202
C0292254
D0594582

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7413176823.849993%
B7414118115.929323%
C7413690993.201133%
D7413736499.338999%

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 8898 7415 1497 1497 16.82% 20.19%
B 8899 7416 951 951 10.69% 12.82%
C 8897 7412 1762 1762 19.80% 23.77%
D 8897 7412 7025 7025 78.96% 94.78%

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 1834049 9777.83 728 709 187.5
A 15 63 905020 4823.0 728 709 187.5
A 12 50 752700 4010.63 728 709 187.5
B 5 172 1537972 9838.17 734 709 156.3
B 10 28 998245 6384.03 734 709 156.3
B 1 255 333743 2131.35 734 709 156.3
C 15 147 1377608 22849.74 180 176 60.3
C 15 148 1341282 22247.14 180 176 60.3
C 15 197 1088092 18047.06 180 176 60.3
D 14 52 4246100 52704.83 205 193 80.6
D 8 129 3431296 42590.6 205 193 80.6
D 7 61 2342168 29071.15 205 193 80.6

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