ASTROSAT CZTI

Data Quality Report

Orbit 20240111_A13_017T01_9000006028_level2

Creation date: 2024-01-18T12:11:07.156163
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_017T01_9000006028cztM0_level2.fits modeM0/AS1A13_017T01_9000006028cztM0_level2_quad_clean.evt
Size (bytes)1,936,324,8002,052,820,800
Size1.8 GB 1.9 GB
Events in quadrant A11,441,80412,198,713
Events in quadrant B11,263,42212,665,804
Events in quadrant C11,639,60812,208,139
Events in quadrant D9,442,91210,264,646

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06974180
B04844360
C04820540
D07840360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A043960
B043960
C043960
D043960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02950
B02950
C02950
D02950

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A21658596684.463836%
B21659647332.185174%
C21660949642.291687%
D2165562489011.493563%

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 299002 216517 0 0 0.00% 0.00%
B 299002 216612 0 0 0.00% 0.00%
C 299002 216602 0 0 0.00% 0.00%
D 299002 216234 0 0 0.00% 0.00%

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 7 110 9416 8.82 2980 2787 751.3
A 0 29 9053 8.34 2980 2787 751.3
A 15 236 8854 8.08 2980 2787 751.3
B 2 9 10466 13.07 2980 2834 584.0
B 2 8 8415 9.56 2980 2834 584.0
B 3 17 8173 9.14 2980 2834 584.0
C 3 202 9114 8.0 3083 2875 779.6
C 1 81 8901 7.73 3083 2875 779.6
C 3 203 8801 7.6 3083 2875 779.6
D 8 176 9453 9.41 2711 2468 742.0
D 8 160 6954 6.05 2711 2468 742.0
D 10 189 6921 6.0 2711 2468 742.0

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