ASTROSAT CZTI

Data Quality Report

Orbit 47435

Creation date: 2024-07-06T08:08:38.294525
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_053T01_9000006326_47435cztM0_level2.fits modeM0/AS1A13_053T01_9000006326_47435cztM0_level2_quad_clean.evt
Size (bytes)550,382,400119,770,560
Size524.9 MB 114.2 MB
Events in quadrant A7,716,916785,540
Events in quadrant B3,618,402823,238
Events in quadrant C4,356,096774,376
Events in quadrant D4,096,226718,260

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0282832
B0160112
C0183092
D0177192

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75513734.939743%
B75511281.695140%
C75513044.025957%
D75512152.847305%

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 7761 7553 94 94 1.21% 1.24%
B 7761 7553 7 7 0.09% 0.09%
C 7761 7553 194 194 2.50% 2.57%
D 7761 7553 117 117 1.51% 1.55%

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 3958703 23008.65 827 807 172.0
A 9 191 559585 3248.37 827 807 172.0
A 3 137 9878 52.73 827 807 172.0
B 5 32 167690 1020.57 836 810 163.5
B 0 198 44297 265.95 836 810 163.5
B 4 171 31388 187.0 836 810 163.5
C 12 2 1105793 5791.98 822 824 190.8
C 1 3 15693 77.94 822 824 190.8
C 3 233 10591 51.2 822 824 190.8
D 2 249 418192 2039.63 822 795 204.6
D 2 165 290916 1417.69 822 795 204.6
D 12 128 132062 641.44 822 795 204.6

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