ASTROSAT CZTI

Data Quality Report

Orbit 14521

Creation date: 2024-06-27T16:56:22.020022
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_066T01_9000002138_14521cztM0_level2.evt modeM0/AS1G08_066T01_9000002138_14521cztM0_level2_quad_clean.evt
Size (bytes)457,502,40088,902,720
Size436.3 MB 84.8 MB
Events in quadrant A3,254,530557,864
Events in quadrant B3,346,106566,742
Events in quadrant C3,356,070560,708
Events in quadrant D3,445,386541,840

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139722
B0143751
C0139401
D0149081

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6675911.363296%
B66751372.052434%
C6675981.468165%
D66751622.426966%

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 7106 6678 0 0 0.00% 0.00%
B 7106 6678 5 5 0.07% 0.07%
C 7106 6678 0 0 0.00% 0.00%
D 7106 6678 81 81 1.14% 1.21%

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 8 15 113170 680.57 805 784 165.1
A 12 189 39438 234.07 805 784 165.1
A 0 226 7018 37.75 805 784 165.1
B 0 219 120749 772.7 803 783 155.3
B 0 189 54997 349.19 803 783 155.3
B 12 111 18260 112.57 803 783 155.3
C 3 233 265765 1434.46 792 797 184.7
C 13 61 5662 26.34 792 797 184.7
C 3 202 1855 5.73 792 797 184.7
D 10 199 354921 1834.49 788 768 193.1
D 12 110 39035 198.22 788 768 193.1
D 2 120 33014 167.03 788 768 193.1

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