ASTROSAT CZTI

Data Quality Report

Orbit 27398

Creation date: 2024-06-27T19:39:41.476016
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/AS1T03_249T01_9000003934_27398cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27398cztM0_level2_quad_clean.evt
Size (bytes)909,440,640179,098,560
Size867.3 MB 170.8 MB
Events in quadrant A6,401,8361,156,029
Events in quadrant B6,544,5901,167,954
Events in quadrant C6,754,1181,100,777
Events in quadrant D6,944,1801,083,474

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0274400
B0278350
C0285380
D0298120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13268640.482364%
B132691220.919436%
C132682171.635514%
D132681341.009949%

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 16268 13270 0 0 0.00% 0.00%
B 16269 13270 15 15 0.09% 0.11%
C 16268 13271 31 31 0.19% 0.23%
D 16268 13271 68 68 0.42% 0.51%

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 13 254 21872 61.21 1655 1623 330.8
A 12 189 21068 58.78 1655 1623 330.8
A 3 137 15511 41.98 1655 1623 330.8
B 12 111 38457 118.81 1640 1600 310.2
B 0 229 36526 112.59 1640 1600 310.2
B 11 111 34017 104.5 1640 1600 310.2
C 14 238 253283 682.39 1574 1583 368.9
C 2 16 192773 518.34 1574 1583 368.9
C 15 208 171572 460.86 1574 1583 368.9
D 1 52 390115 1038.8 1586 1547 374.1
D 10 50 256014 680.29 1586 1547 374.1
D 2 250 231993 616.07 1586 1547 374.1

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