ASTROSAT CZTI

Data Quality Report

Orbit 11394

Creation date: 2024-06-27T16:12:19.390993
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_022T04_9000001666_11394cztM0_level2.evt modeM0/AS1A04_022T04_9000001666_11394cztM0_level2_quad_clean.evt
Size (bytes)617,618,880100,045,440
Size589.0 MB 95.4 MB
Events in quadrant A3,762,361637,163
Events in quadrant B5,198,297612,415
Events in quadrant C3,444,436686,869
Events in quadrant D5,811,857591,673

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160463
B0204442
C0153032
D0223822

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7196851.181212%
B71966088.449138%
C7196741.028349%
D719673210.172318%

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 8811 7198 20 20 0.23% 0.28%
B 8811 7197 268 268 3.04% 3.72%
C 8811 7198 15 15 0.17% 0.21%
D 8811 7198 553 553 6.28% 7.68%

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 396187 2292.5 848 827 172.5
A 1 162 31136 175.75 848 827 172.5
A 1 178 18356 101.64 848 827 172.5
B 4 239 1753250 11144.86 828 805 157.2
B 11 51 85690 539.83 828 805 157.2
B 15 204 53619 335.88 828 805 157.2
C 0 207 127944 637.88 850 854 199.2
C 13 61 6099 26.33 850 854 199.2
C 3 202 2073 6.12 850 854 199.2
D 10 253 1912774 9928.65 802 778 192.6
D 1 52 384436 1992.27 802 778 192.6
D 13 104 212497 1099.42 802 778 192.6

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