ASTROSAT CZTI

Data Quality Report

Orbit 31227

Creation date: 2024-06-27T20:25:19.085733
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/AS1C06_002T02_9000004518_31227cztM0_level2.evt modeM0/AS1C06_002T02_9000004518_31227cztM0_level2_quad_clean.evt
Size (bytes)703,848,960114,102,720
Size671.2 MB 108.8 MB
Events in quadrant A3,320,376773,560
Events in quadrant B6,893,625733,900
Events in quadrant C3,739,446740,938
Events in quadrant D6,881,420710,357

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146811
B0257101
C0157121
D0256842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7134220.308382%
B71355477.666433%
C71351462.046251%
D71344115.761144%

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 7464 7135 5 5 0.07% 0.07%
B 7465 7136 328 328 4.39% 4.60%
C 7465 7136 20 20 0.27% 0.28%
D 7464 7135 346 346 4.64% 4.85%

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 12 96 31570 179.81 847 830 171.0
A 13 254 14990 82.83 847 830 171.0
A 15 174 9748 52.17 847 830 171.0
B 6 159 2215162 14367.65 819 798 154.1
B 4 80 1058371 6861.94 819 798 154.1
B 4 171 125535 809.34 819 798 154.1
C 14 238 142339 738.67 815 820 191.6
C 0 10 139971 726.31 815 820 191.6
C 10 22 106455 551.37 815 820 191.6
D 8 195 3176471 14989.82 808 793 211.9
D 12 6 147519 692.58 808 793 211.9
D 7 69 144584 678.72 808 793 211.9

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