ASTROSAT CZTI

Data Quality Report

Orbit 32268

Creation date: 2024-06-27T20:38:16.059569
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/AS1A09_131T01_9000004696_32268cztM0_level2.evt modeM0/AS1A09_131T01_9000004696_32268cztM0_level2_quad_clean.evt
Size (bytes)851,754,240114,762,240
Size812.3 MB 109.4 MB
Events in quadrant A3,258,617786,858
Events in quadrant B5,506,994793,178
Events in quadrant C3,696,749782,071
Events in quadrant D12,858,018621,995

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144811
B0216711
C0156571
D0429841

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7042320.454416%
B70431522.158171%
C70431582.243362%
D7043360951.242368%

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 7802 7043 0 0 0.00% 0.00%
B 7803 7044 30 30 0.38% 0.43%
C 7803 7044 14 14 0.18% 0.20%
D 7803 7044 3785 3785 48.51% 53.73%

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 14 238 19166 109.75 835 818 167.2
A 13 6 16529 93.97 835 818 167.2
A 13 254 13408 75.31 835 818 167.2
B 6 159 2029590 12821.62 834 813 158.2
B 5 172 110624 693.99 834 813 158.2
B 4 80 29983 184.35 834 813 158.2
C 3 233 227810 1208.37 807 811 187.9
C 14 238 144708 766.0 807 811 187.9
C 0 10 105801 558.89 807 811 187.9
D 1 52 8073101 50022.89 687 668 161.4
D 8 195 1402661 8687.81 687 668 161.4
D 12 218 233225 1441.1 687 668 161.4

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