ASTROSAT CZTI

Data Quality Report

Orbit 07687

Creation date: 2024-06-27T15:22:44.322687
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/AS1G06_104T01_9000001060_07687cztM0_level2.evt modeM0/AS1G06_104T01_9000001060_07687cztM0_level2_quad_clean.evt
Size (bytes)592,243,20081,838,080
Size564.8 MB 78.0 MB
Events in quadrant A3,130,488519,473
Events in quadrant B3,300,780529,127
Events in quadrant C7,137,290489,114
Events in quadrant D3,923,535483,292

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134562
B0137741
C0256161
D0159001

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65501231.877863%
B65501131.725191%
C6550111016.946565%
D65501562.381679%

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 6550 0 0 0.00% 0.00%
B 7655 6551 1 1 0.01% 0.02%
C 7655 6550 1125 1125 14.70% 17.18%
D 7655 6551 26 26 0.34% 0.40%

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 3 1 8612 48.2 807 790 162.3
A 0 226 7639 42.2 807 790 162.3
A 12 194 7212 39.57 807 790 162.3
B 0 219 80393 526.94 807 789 151.1
B 0 214 30501 196.68 807 789 151.1
B 10 245 14888 93.33 807 789 151.1
C 9 68 4216852 24685.21 744 748 170.8
C 8 208 9068 48.71 744 748 170.8
C 13 61 5765 29.37 744 748 170.8
D 2 152 640309 3349.31 787 763 190.9
D 12 233 83977 435.79 787 763 190.9
D 5 233 75239 390.03 787 763 190.9

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