ASTROSAT CZTI

Data Quality Report

Orbit 11864

Creation date: 2024-06-27T16:19:24.986925
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/AS1G08_048T01_9000001752_11864cztM0_level2.evt modeM0/AS1G08_048T01_9000001752_11864cztM0_level2_quad_clean.evt
Size (bytes)490,700,16091,111,680
Size468.0 MB 86.9 MB
Events in quadrant A3,379,877591,855
Events in quadrant B4,438,569579,352
Events in quadrant C2,878,735579,252
Events in quadrant D3,717,711550,664

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144842
B0175481
C0133061
D0153621

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6565530.807312%
B65654576.961158%
C6565140.213252%
D65651271.934501%

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 7591 6567 0 0 0.00% 0.00%
B 7591 6567 311 311 4.10% 4.74%
C 7591 6567 0 0 0.00% 0.00%
D 7591 6567 135 135 1.78% 2.06%

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 1 162 136319 863.12 768 751 157.1
A 1 178 68568 431.77 768 751 157.1
A 1 161 60240 378.75 768 751 157.1
B 4 239 1263553 8688.29 755 737 145.3
B 15 204 72405 493.08 755 737 145.3
B 15 185 37965 256.13 755 737 145.3
C 13 61 5435 27.43 737 739 171.2
C 8 222 2282 9.01 737 739 171.2
C 14 234 1842 6.44 737 739 171.2
D 1 52 538304 3070.99 727 706 175.1
D 8 195 248175 1413.65 727 706 175.1
D 13 104 44844 252.14 727 706 175.1

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