ASTROSAT CZTI

Data Quality Report

Orbit 20210816_A10_109T01_9000004646_level2

Creation date: 2021-08-24T23:06:04.247666
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/AS1A10_109T01_9000004646cztM0_level2_bc.evt modeM0/AS1A10_109T01_9000004646cztM0_level2_quad_clean.evt
Size (bytes)17,185,383,3605,334,880,320
Size16.0 GB 5.0 GB
Events in quadrant A90,198,47235,546,871
Events in quadrant B181,133,00235,167,054
Events in quadrant C104,991,59333,647,620
Events in quadrant D120,237,43233,118,310

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A071740
B071720
C071700
D071740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07911170
B011010670
C08636950
D08737640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05770
B05770
C05770
D05770

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A35228584282.392381%
B352194104202.958597%
C352280151764.307937%
D35221870822.010687%

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 413097 352407 323 323 0.08% 0.09%
B 413097 352327 170 170 0.04% 0.05%
C 413097 352414 197 197 0.05% 0.06%
D 413097 352344 468 468 0.11% 0.13%

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 13 9254264 2036.76 20878 20573 4533.5
A 13 254 585962 124.71 20878 20573 4533.5
A 13 6 436413 91.73 20878 20573 4533.5
B 6 159 89606737 22809.16 20774 20460 3927.6
B 10 245 5206762 1320.46 20774 20460 3927.6
B 4 80 3627832 918.46 20774 20460 3927.6
C 0 10 13572940 2888.32 19767 19837 4692.4
C 3 233 11670284 2482.85 19767 19837 4692.4
C 10 22 1542698 324.54 19767 19837 4692.4
D 8 195 26628007 5730.74 20379 19876 4643.1
D 12 218 4941471 1059.99 20379 19876 4643.1
D 12 233 3453538 739.53 20379 19876 4643.1

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