ASTROSAT CZTI

Data Quality Report

Orbit 03550

Creation date: 2024-06-27T14:30:51.367517
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/AS1G05_045T01_9000000468_03550cztM0_level2.evt modeM0/AS1G05_045T01_9000000468_03550cztM0_level2_quad_clean.evt
Size (bytes)592,104,96088,879,680
Size564.7 MB 84.8 MB
Events in quadrant A3,554,899548,424
Events in quadrant B3,768,786547,024
Events in quadrant C6,768,874531,204
Events in quadrant D3,323,250534,728

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161363
B0166502
C0254702
D0158692

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7618680.892623%
B76181411.850879%
C76182763.622998%
D7619320.420003%

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 7788 7619 1 1 0.01% 0.01%
B 7788 7619 13 13 0.17% 0.17%
C 7788 7620 124 124 1.59% 1.63%
D 7789 7621 9 9 0.12% 0.12%

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 3 1 90286 505.68 858 838 176.9
A 0 118 70286 392.61 858 838 176.9
A 0 50 53172 295.86 858 838 176.9
B 15 204 201947 1188.68 872 850 169.2
B 14 167 49216 285.89 872 850 169.2
B 15 54 47186 273.89 872 850 169.2
C 1 192 3337537 17101.12 837 839 195.1
C 1 16 117119 595.95 837 839 195.1
C 8 128 19517 95.73 837 839 195.1
D 13 223 52072 251.11 839 812 204.1
D 13 239 34902 167.0 839 812 204.1
D 2 206 21467 101.18 839 812 204.1

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