ASTROSAT CZTI

Data Quality Report

Orbit 13093

Creation date: 2024-06-27T16:36:26.308697
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_037T01_9000001928_13093cztM0_level2.evt modeM0/AS1G08_037T01_9000001928_13093cztM0_level2_quad_clean.evt
Size (bytes)2,197,702,080292,792,320
Size2.0 GB 279.2 MB
Events in quadrant A12,827,6091,871,093
Events in quadrant B23,818,4131,681,107
Events in quadrant C12,565,9891,856,418
Events in quadrant D15,657,0001,735,785

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05100
B05100
C05100
D05100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0535646
B0871665
C0541855
D0633415

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A250265082.029889%
B25026600123.979062%
C250264581.830097%
D2502612144.850955%

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 27522 25032 3 3 0.01% 0.01%
B 27522 25032 3408 3408 12.38% 13.61%
C 27522 25032 78 78 0.28% 0.31%
D 27522 25032 640 640 2.33% 2.56%

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 12 189 548807 888.31 3013 2945 614.5
A 8 15 401112 647.96 3013 2945 614.5
A 0 23 107677 170.44 3013 2945 614.5
B 4 239 9411224 18953.19 2608 2540 496.4
B 0 85 2890303 5817.21 2608 2540 496.4
B 3 64 525952 1054.38 2608 2540 496.4
C 15 208 1079256 1580.81 2934 2947 680.9
C 13 61 21176 26.77 2934 2947 680.9
C 14 234 20431 25.68 2934 2947 680.9
D 1 52 3024134 4317.63 2901 2826 699.8
D 14 34 1224346 1745.62 2901 2826 699.8
D 8 195 252327 356.55 2901 2826 699.8

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