ASTROSAT CZTI

Data Quality Report

Orbit 09839

Creation date: 2024-06-27T15:51:13.848061
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/AS1G07_020T01_9000001398_09839cztM0_level2.evt modeM0/AS1G07_020T01_9000001398_09839cztM0_level2_quad_clean.evt
Size (bytes)450,290,88086,238,720
Size429.4 MB 82.2 MB
Events in quadrant A2,959,214551,087
Events in quadrant B3,198,841556,819
Events in quadrant C2,961,230547,123
Events in quadrant D4,084,997512,044

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013277119
B013806137
C013298118
D016977221

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01322
B01320
C01320
D01324

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6370210.329670%
B6361480.754598%
C6367250.392650%
D63571632.564103%

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 7570 6423 0 0 0.00% 0.00%
B 7570 6419 13 13 0.17% 0.20%
C 7570 6422 8 8 0.11% 0.12%
D 7570 6422 125 125 1.65% 1.95%

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 4 2 25297 158.71 760 745 154.7
A 0 226 7163 41.48 760 745 154.7
A 12 194 6345 36.2 760 745 154.7
B 4 239 131199 893.57 763 746 146.0
B 0 229 21785 144.11 763 746 146.0
B 0 219 19965 131.65 763 746 146.0
C 0 207 63299 367.8 731 734 170.1
C 4 254 22043 125.27 731 734 170.1
C 14 234 13642 75.88 731 734 170.1
D 2 16 304784 1606.01 718 699 189.3
D 1 52 299209 1576.57 718 699 189.3
D 2 136 287696 1515.76 718 699 189.3

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