ASTROSAT CZTI

Data Quality Report

Orbit 25841

Creation date: 2024-06-27T19:21:59.576930
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/AS1A07_068T01_9000003756_25841cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25841cztM0_level2_quad_clean.evt
Size (bytes)468,967,68092,131,200
Size447.2 MB 87.9 MB
Events in quadrant A3,407,654588,398
Events in quadrant B3,378,738592,675
Events in quadrant C3,347,664559,683
Events in quadrant D3,591,481560,071

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146280
B0145000
C0144630
D0155800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7024340.484055%
B7024370.526765%
C7024540.768793%
D7024420.597950%

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 7614 7025 7 7 0.09% 0.10%
B 7614 7025 0 0 0.00% 0.00%
C 7614 7025 3 3 0.04% 0.04%
D 7614 7025 26 26 0.34% 0.37%

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 13 93828 540.45 857 839 172.1
A 13 254 10572 56.57 857 839 172.1
A 3 137 8093 42.16 857 839 172.1
B 6 36 29397 174.09 852 831 164.1
B 12 111 20195 118.01 852 831 164.1
B 11 111 18196 105.83 852 831 164.1
C 14 238 128026 664.24 811 814 191.5
C 14 225 38160 195.0 811 814 191.5
C 3 233 24897 125.75 811 814 191.5
D 1 52 295584 1504.35 819 799 196.0
D 7 80 74779 377.53 819 799 196.0
D 1 3 68795 347.0 819 799 196.0

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