ASTROSAT CZTI

Data Quality Report

Orbit 01341

Creation date: 2024-06-27T14:11:14.139829
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/AS1G04_002T02_9000000230_01341cztM0_level2.evt modeM0/AS1G04_002T02_9000000230_01341cztM0_level2_quad_clean.evt
Size (bytes)1,095,989,76099,869,760
Size1.0 GB 95.2 MB
Events in quadrant A8,504,018649,619
Events in quadrant B8,831,113648,720
Events in quadrant C8,133,477635,344
Events in quadrant D7,288,042632,053

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0299012
B0308891
C0288121
D0263031

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6578150.228033%
B6578530.805716%
C6578190.288842%
D6578230.349650%

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 7548 6579 433 433 5.74% 6.58%
B 7548 6579 526 526 6.97% 8.00%
C 7548 6579 227 227 3.01% 3.45%
D 7548 6579 142 142 1.88% 2.16%

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 4 32 510327 1047.17 2000 2012 485.4
A 15 127 308819 632.05 2000 2012 485.4
A 11 79 8009 12.35 2000 2012 485.4
B 8 4 503573 1020.39 2083 2092 491.5
B 6 53 113113 225.9 2083 2092 491.5
B 5 191 68068 134.24 2083 2092 491.5
C 15 241 309088 573.2 1927 1991 535.8
C 3 9 240326 444.86 1927 1991 535.8
C 3 79 27424 47.47 1927 1991 535.8
D 10 125 60111 100.46 1869 1939 579.0
D 13 252 55108 91.82 1869 1939 579.0
D 10 84 47117 78.02 1869 1939 579.0

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