ASTROSAT CZTI

Data Quality Report

Orbit 30558

Creation date: 2024-06-27T20:16:56.563576
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/AS1A10_055T01_9000004400_30558cztM0_level2.evt modeM0/AS1A10_055T01_9000004400_30558cztM0_level2_quad_clean.evt
Size (bytes)541,811,520125,380,800
Size516.7 MB 119.6 MB
Events in quadrant A3,419,009871,028
Events in quadrant B5,214,277860,288
Events in quadrant C3,617,344806,734
Events in quadrant D3,721,387809,739

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140801
B0198971
C0148252
D0151801

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64531021.580660%
B64531802.789400%
C64522383.688779%
D64521081.673900%

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 7673 6454 0 0 0.00% 0.00%
B 7673 6454 14 14 0.18% 0.22%
C 7672 6453 40 40 0.52% 0.62%
D 7672 6453 32 32 0.42% 0.50%

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 8 192 11723 62.89 884 871 172.6
A 13 254 11478 61.47 884 871 172.6
A 3 137 8040 41.55 884 871 172.6
B 6 159 1737538 10833.35 857 840 160.3
B 4 171 42876 262.22 857 840 160.3
B 5 172 27067 163.6 857 840 160.3
C 3 233 154703 823.25 812 818 186.9
C 0 10 138885 738.63 812 818 186.9
C 14 238 137695 732.26 812 818 186.9
D 8 195 153338 773.0 844 824 197.3
D 2 250 115919 583.35 844 824 197.3
D 13 249 100642 505.92 844 824 197.3

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