ASTROSAT CZTI

Data Quality Report

Orbit 23148

Creation date: 2024-06-27T18:50:32.343779
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/AS1T03_175T01_9000003420_23148cztM0_level2.evt modeM0/AS1T03_175T01_9000003420_23148cztM0_level2_quad_clean.evt
Size (bytes)143,130,24036,051,840
Size136.5 MB 34.4 MB
Events in quadrant A943,199235,723
Events in quadrant B1,001,240242,948
Events in quadrant C1,114,773236,202
Events in quadrant D1,134,583228,742

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A041801
B042941
C045891
D047851

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A203050.246305%
B2030190.935961%
C2030844.137931%
D2030311.527094%

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 2030 2030 0 0 0.00% 0.00%
B 2030 2030 10 10 0.49% 0.49%
C 2030 2030 54 54 2.66% 2.66%
D 2030 2030 26 26 1.28% 1.28%

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 6 16 3134 56.76 243 237 51.0
A 13 254 2950 53.16 243 237 51.0
A 0 226 2162 37.72 243 237 51.0
B 10 247 30989 624.53 247 240 49.2
B 12 111 5889 114.74 247 240 49.2
B 11 111 5061 97.92 247 240 49.2
C 0 10 159816 2838.77 232 234 56.2
C 14 238 36570 646.37 232 234 56.2
C 7 247 6898 118.54 232 234 56.2
D 1 52 125347 2100.94 236 229 59.6
D 6 112 40247 671.97 236 229 59.6
D 7 238 28375 472.62 236 229 59.6

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