ASTROSAT CZTI

Data Quality Report

Orbit 33187

Creation date: 2024-06-27T20:45:52.219646
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/AS1A11_080T02_9000004768_33187cztM0_level2.evt modeM0/AS1A11_080T02_9000004768_33187cztM0_level2_quad_clean.evt
Size (bytes)462,957,12072,360,000
Size441.5 MB 69.0 MB
Events in quadrant A2,548,327459,609
Events in quadrant B3,785,281458,105
Events in quadrant C2,741,554454,722
Events in quadrant D4,565,560426,694

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112433
B0148902
C0118402
D0174632

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A560050.089286%
B56002464.392857%
C5600370.660714%
D5600921.642857%

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 7271 5601 0 0 0.00% 0.00%
B 7271 5601 150 150 2.06% 2.68%
C 7271 5601 24 24 0.33% 0.43%
D 7271 5601 67 67 0.92% 1.20%

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 13 254 9715 68.7 657 643 132.0
A 3 137 6059 41.01 657 643 132.0
A 13 6 5544 37.11 657 643 132.0
B 5 172 619780 5072.56 646 631 122.1
B 0 219 446909 3656.26 646 631 122.1
B 15 85 40508 326.7 646 631 122.1
C 0 10 134036 905.22 635 641 147.4
C 1 23 56891 381.72 635 641 147.4
C 7 221 35492 236.5 635 641 147.4
D 8 195 1267415 7407.84 628 614 171.0
D 7 223 219824 1281.87 628 614 171.0
D 10 203 197175 1149.42 628 614 171.0

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