ASTROSAT CZTI

Data Quality Report

Orbit 36447

Creation date: 2024-06-27T21:26:53.988793
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/AS1C07_009T01_9000005200_36447cztM0_level2.evt modeM0/AS1C07_009T01_9000005200_36447cztM0_level2_quad_clean.evt
Size (bytes)407,373,12079,087,680
Size388.5 MB 75.4 MB
Events in quadrant A2,567,468519,995
Events in quadrant B3,305,043515,435
Events in quadrant C2,968,168510,605
Events in quadrant D3,145,824487,089

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108112
B0132111
C0119451
D0127851

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A516040.077519%
B5160901.744186%
C5160551.065891%
D51601362.635659%

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 7012 5161 0 0 0.00% 0.00%
B 7012 5161 53 53 0.76% 1.03%
C 7012 5161 39 39 0.56% 0.76%
D 7012 5161 100 100 1.43% 1.94%

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 143204 1149.73 616 605 124.0
A 9 143 31548 249.48 616 605 124.0
A 13 254 8690 65.19 616 605 124.0
B 5 255 346445 3058.42 598 583 113.1
B 5 172 217192 1915.45 598 583 113.1
B 0 189 106732 938.67 598 583 113.1
C 0 207 330893 2454.74 587 591 134.6
C 15 214 220050 1630.97 587 591 134.6
C 0 10 117634 869.84 587 591 134.6
D 12 6 274950 1936.4 593 578 141.7
D 13 171 181133 1274.28 593 578 141.7
D 2 250 112045 786.69 593 578 141.7

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