ASTROSAT CZTI

Data Quality Report

Orbit 14993

Creation date: 2024-06-27T17:02:15.326590
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/AS1T02_056T01_9000002210_14993cztM0_level2.evt modeM0/AS1T02_056T01_9000002210_14993cztM0_level2_quad_clean.evt
Size (bytes)469,166,40072,930,240
Size447.4 MB 69.6 MB
Events in quadrant A3,654,213441,204
Events in quadrant B3,440,802450,970
Events in quadrant C3,419,132432,940
Events in quadrant D3,241,889418,408

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150143
B0143162
C0140362
D0140742

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6663751.125619%
B6663801.200660%
C6663460.690380%
D6663630.945520%

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 7834 6664 1 1 0.01% 0.02%
B 7834 6665 1 1 0.01% 0.02%
C 7834 6665 0 0 0.00% 0.00%
D 7834 6665 17 17 0.22% 0.26%

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 1 162 155150 902.74 847 831 170.9
A 1 178 73151 423.06 847 831 170.9
A 1 161 64554 372.77 847 831 170.9
B 0 229 84629 527.03 849 829 159.0
B 12 111 18094 108.58 849 829 159.0
B 11 111 15285 90.91 849 829 159.0
C 3 233 234460 1247.88 815 821 187.2
C 13 61 5977 27.54 815 821 187.2
C 3 232 2775 10.44 815 821 187.2
D 13 249 47642 238.37 807 788 196.6
D 7 223 40588 202.48 807 788 196.6
D 2 234 26513 130.88 807 788 196.6

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