ASTROSAT CZTI

Data Quality Report

Orbit 47929

Creation date: 2024-08-08T16:06:45.262332
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_025T02_9000006380_47929cztM0_level2.fits modeM0/AS1A13_025T02_9000006380_47929cztM0_level2_quad_clean.evt
Size (bytes)489,856,320121,167,360
Size467.2 MB 115.6 MB
Events in quadrant A7,293,908794,304
Events in quadrant B3,556,654818,480
Events in quadrant C3,255,972795,595
Events in quadrant D3,432,081727,875

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0267193
B0159870
C0154990
D0159170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7658881.149125%
B7658560.731261%
C765850.065291%
D7658200.261165%

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 7658 7658 35 35 0.46% 0.46%
B 7658 7658 34 34 0.44% 0.44%
C 7658 7658 1 1 0.01% 0.01%
D 7658 7658 17 17 0.22% 0.22%

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 3897795 22310.07 829 807 174.7
A 13 248 100385 570.08 829 807 174.7
A 7 3 58159 328.34 829 807 174.7
B 5 255 153702 933.52 825 797 163.8
B 12 0 52393 315.0 825 797 163.8
B 0 183 25496 150.79 825 797 163.8
C 14 254 24107 118.77 825 828 196.0
C 12 250 10269 48.17 825 828 196.0
C 11 16 5941 26.09 825 828 196.0
D 14 34 102640 492.1 824 797 207.0
D 2 37 75282 359.9 824 797 207.0
D 2 234 41834 198.29 824 797 207.0

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