ASTROSAT CZTI

Data Quality Report

Orbit 17697

Creation date: 2024-06-27T17:39:43.457619
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/AS1A05_186T02_9000002624_17697cztM0_level2.evt modeM0/AS1A05_186T02_9000002624_17697cztM0_level2_quad_clean.evt
Size (bytes)1,296,040,320225,144,000
Size1.2 GB 214.7 MB
Events in quadrant A8,496,9821,430,410
Events in quadrant B9,813,8821,424,830
Events in quadrant C9,204,8311,367,885
Events in quadrant D10,502,6971,339,513

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0375793
B0410183
C0379033
D0438543

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03700
B03700
C03700
D03700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182282281.250823%
B182284382.402897%
C182283011.651306%
D182287213.955453%

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 19738 18231 15 15 0.08% 0.08%
B 19738 18229 84 84 0.43% 0.46%
C 19738 18229 0 0 0.00% 0.00%
D 19738 18230 490 490 2.48% 2.69%

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 15 174 131209 294.61 2175 2125 438.2
A 0 226 18874 38.23 2175 2125 438.2
A 3 137 16367 32.5 2175 2125 438.2
B 10 245 795752 1941.29 2155 2102 408.8
B 7 220 197110 476.99 2155 2102 408.8
B 0 229 169704 409.96 2155 2102 408.8
C 3 233 660710 1351.01 2077 2087 487.5
C 14 238 319229 650.54 2077 2087 487.5
C 5 218 104459 209.99 2077 2087 487.5
D 1 52 1438989 2838.83 2086 2029 506.2
D 7 238 834415 1644.45 2086 2029 506.2
D 2 33 111689 216.64 2086 2029 506.2

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