ASTROSAT CZTI

Data Quality Report

Orbit 12645

Creation date: 2024-06-27T16:30:26.420561
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_071T01_9000001874_12645cztM0_level2.evt modeM0/AS1G08_071T01_9000001874_12645cztM0_level2_quad_clean.evt
Size (bytes)555,220,80066,945,600
Size529.5 MB 63.8 MB
Events in quadrant A3,126,388396,970
Events in quadrant B4,435,993394,733
Events in quadrant C3,146,599399,360
Events in quadrant D5,649,425366,475

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137543
B0175392
C0138942
D0215202

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6734580.861301%
B67343435.093555%
C6734440.653401%
D67346129.088209%

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 7655 6735 0 0 0.00% 0.00%
B 7655 6735 195 195 2.55% 2.90%
C 7655 6735 1 1 0.01% 0.01%
D 7655 6735 535 535 6.99% 7.94%

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 9218 51.31 810 792 164.2
A 0 226 7263 39.4 810 792 164.2
A 12 194 6354 33.87 810 792 164.2
B 4 239 987191 6393.14 799 780 154.3
B 11 51 133704 861.51 799 780 154.3
B 3 64 96079 617.65 799 780 154.3
C 15 208 51271 276.15 789 794 182.8
C 14 234 17736 92.69 789 794 182.8
C 13 61 5629 26.45 789 794 182.8
D 1 52 1584484 8770.91 748 726 180.6
D 10 157 595215 3292.3 748 726 180.6
D 11 176 490467 2712.21 748 726 180.6

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