ASTROSAT CZTI

Data Quality Report

Orbit 08675

Creation date: 2024-06-27T15:35:46.728124
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_024T01_9000001206_08675cztM0_level2.evt modeM0/AS1G07_024T01_9000001206_08675cztM0_level2_quad_clean.evt
Size (bytes)455,094,720125,688,960
Size434.0 MB 119.9 MB
Events in quadrant A3,210,011822,424
Events in quadrant B3,636,083846,326
Events in quadrant C3,099,420838,765
Events in quadrant D3,349,162799,867

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147472
B0157751
C0146181
D0153781

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71691231.715720%
B71692102.929279%
C7169410.571907%
D7169871.213558%

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 7339 7169 7 7 0.10% 0.10%
B 7339 7170 73 73 0.99% 1.02%
C 7339 7170 2 2 0.03% 0.03%
D 7339 7169 18 18 0.25% 0.25%

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 13 251 68314 408.35 802 783 165.4
A 15 174 19293 111.93 802 783 165.4
A 13 248 16972 97.89 802 783 165.4
B 4 97 258170 1655.22 813 793 155.5
B 10 16 96812 617.51 813 793 155.5
B 0 219 45959 290.47 813 793 155.5
C 1 16 17688 92.58 785 786 182.6
C 13 61 6136 29.3 785 786 182.6
C 4 252 5359 25.05 785 786 182.6
D 2 152 179249 931.79 779 752 191.6
D 13 137 77460 400.43 779 752 191.6
D 9 64 36426 186.23 779 752 191.6

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