ASTROSAT CZTI

Data Quality Report

Orbit 06539

Creation date: 2024-06-27T15:08:31.196855
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_091T01_9000000880_06539cztM0_level2.evt modeM0/AS1G06_091T01_9000000880_06539cztM0_level2_quad_clean.evt
Size (bytes)445,613,760110,396,160
Size425.0 MB 105.3 MB
Events in quadrant A3,333,213732,135
Events in quadrant B3,583,688735,201
Events in quadrant C2,863,055728,241
Events in quadrant D3,272,424693,377

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141453
B0151682
C0131892
D0143552

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6511731.121180%
B65111722.641683%
C6511150.230379%
D6511811.244049%

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 8646 6513 26 26 0.30% 0.40%
B 8646 6513 67 67 0.77% 1.03%
C 8646 6513 0 0 0.00% 0.00%
D 8646 6513 32 32 0.37% 0.49%

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 304353 1949.21 756 738 155.8
A 15 236 74921 476.25 756 738 155.8
A 8 15 20577 127.36 756 738 155.8
B 4 170 313003 2176.25 761 743 143.5
B 0 219 184157 1278.28 761 743 143.5
B 15 204 23513 158.69 761 743 143.5
C 13 61 5973 30.87 732 737 169.6
C 5 223 2491 10.34 732 737 169.6
C 0 235 2422 9.93 732 737 169.6
D 2 152 157683 881.5 725 702 178.1
D 12 233 99167 552.92 725 702 178.1
D 2 33 79905 444.75 725 702 178.1

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