ASTROSAT CZTI

Data Quality Report

Orbit 11643

Creation date: 2024-06-27T16:16:20.730918
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/AS1A04_026T04_9000001714_11643cztM0_level2.evt modeM0/AS1A04_026T04_9000001714_11643cztM0_level2_quad_clean.evt
Size (bytes)504,195,840109,431,360
Size480.8 MB 104.4 MB
Events in quadrant A4,509,121733,724
Events in quadrant B3,730,340735,398
Events in quadrant C2,665,763724,365
Events in quadrant D3,949,632693,701

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177032
B0152631
C0123721
D0160001

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61152223.630417%
B61152734.464432%
C6115110.179886%
D61151682.747343%

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 6621 6117 53 53 0.80% 0.87%
B 6621 6117 117 117 1.77% 1.91%
C 6621 6117 2 2 0.03% 0.03%
D 6621 6117 102 102 1.54% 1.67%

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 5 938403 6502.97 700 684 144.2
A 1 162 304310 2105.61 700 684 144.2
A 1 178 183596 1268.47 700 684 144.2
B 4 239 789840 5895.67 693 675 133.9
B 15 204 87696 650.11 693 675 133.9
B 0 219 60565 447.42 693 675 133.9
C 15 208 7928 45.5 679 680 159.3
C 13 250 6159 34.39 679 680 159.3
C 13 61 5090 27.68 679 680 159.3
D 13 137 297759 1813.4 675 653 163.8
D 13 104 297605 1812.46 675 653 163.8
D 10 253 272280 1657.89 675 653 163.8

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