ASTROSAT CZTI

Data Quality Report

Orbit 08050

Creation date: 2024-06-27T15:27:17.718198
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_246T02_9000001106_08050cztM0_level2.evt modeM0/AS1G05_246T02_9000001106_08050cztM0_level2_quad_clean.evt
Size (bytes)1,805,970,240382,832,640
Size1.7 GB 365.1 MB
Events in quadrant A13,118,6012,524,102
Events in quadrant B12,453,6862,589,020
Events in quadrant C12,332,3382,476,521
Events in quadrant D15,133,2902,319,284

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0556345
B0531225
C0535875
D0624675

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05000
B05000
C05000
D05000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0630
B0630
C0630
D0630

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A245264952.018266%
B245263961.614613%
C245264291.749164%
D2452612044.909076%

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 30761 24531 130 130 0.42% 0.53%
B 30761 24531 57 57 0.19% 0.23%
C 30761 24531 188 188 0.61% 0.77%
D 30761 24531 888 888 2.89% 3.62%

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 2 1114476 1896.64 2938 2887 586.1
A 15 79 488798 829.08 2938 2887 586.1
A 0 128 220660 371.57 2938 2887 586.1
B 4 239 401571 714.82 2992 2924 557.7
B 5 255 143181 251.5 2992 2924 557.7
B 4 81 141078 247.72 2992 2924 557.7
C 4 254 987881 1501.92 2863 2882 655.8
C 1 16 170157 255.06 2863 2882 655.8
C 13 61 21737 28.75 2863 2882 655.8
D 1 52 3565039 4986.96 2756 2692 714.3
D 13 169 428102 595.53 2756 2692 714.3
D 2 136 226885 313.85 2756 2692 714.3

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