ASTROSAT CZTI

Data Quality Report

Orbit 49767

Creation date: 2024-12-12T11:53:47.868874
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_49767cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49767cztM0_level2_quad_clean.evt
Size (bytes)1,135,776,96036,953,280
Size1.1 GB 35.2 MB
Events in quadrant A13,786,477100,496
Events in quadrant B5,031,892564,830
Events in quadrant C9,747,81438,852
Events in quadrant D13,022,9585,207

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04495068
B01894710
C03312286
D04274527

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5857506886.528940%
B586387714.958213%
C5855553694.551665%
D5861582699.402832%

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 7026 5864 5093 5093 72.49% 86.85%
B 7026 5866 610 610 8.68% 10.40%
C 7026 5864 1510 1510 21.49% 25.75%
D 7025 5865 4400 4400 62.63% 75.02%

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 10 83 6360121 49723.19 464 451 127.9
A 7 64 2507659 19602.65 464 451 127.9
A 12 50 1154856 9025.73 464 451 127.9
B 10 28 1030469 7918.83 614 598 130.1
B 5 172 855227 6571.37 614 598 130.1
B 5 185 147147 1126.84 614 598 130.1
C 15 180 2281354 53411.76 109 106 42.7
C 15 190 1837755 43025.6 109 106 42.7
C 15 163 1659374 38849.09 109 106 42.7
D 15 142 6000810 132739.83 119 113 45.2
D 7 61 2004055 44328.67 119 113 45.2
D 15 40 905173 20020.59 119 113 45.2

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