ASTROSAT CZTI

Data Quality Report

Orbit 01789

Creation date: 2024-06-27T14:12:43.807969
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/AS1G02_020T01_9000000296_01789cztM0_level2.evt modeM0/AS1G02_020T01_9000000296_01789cztM0_level2_quad_clean.evt
Size (bytes)1,187,979,84022,682,880
Size1.1 GB 21.6 MB
Events in quadrant A8,790,49849,846
Events in quadrant B9,117,88950,057
Events in quadrant C8,609,67448,691
Events in quadrant D8,973,77925,850

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B110
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01451

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0313282
B0322912
C03081716
D0319112

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A735180.108829%
B735190.122432%
C734930.040822%
D73512723.700177%

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 8957 7354 156 156 1.74% 2.12%
B 8957 7353 206 206 2.30% 2.80%
C 8957 7354 182 182 2.03% 2.47%
D 8957 7354 499 499 5.57% 6.79%

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 0 231 46125 79.99 2285 2297 547.9
A 10 2 7059 8.69 2285 2297 547.9
A 15 236 5568 5.97 2285 2297 547.9
B 15 85 18495 28.7 2392 2400 560.9
B 15 255 13100 19.08 2392 2400 560.9
B 4 200 12384 17.8 2392 2400 560.9
C 14 223 41788 64.69 2189 2269 610.9
C 9 236 29359 44.34 2189 2269 610.9
C -1 -1 -1 -1.0 2189 2269 610.9
D 2 16 825824 1284.09 2060 2130 641.5
D 13 169 118114 180.81 2060 2130 641.5
D 7 85 104653 159.83 2060 2130 641.5

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