ASTROSAT CZTI

Data Quality Report

Orbit 20548

Creation date: 2024-06-27T18:16:43.881202
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/AS1A05_069T02_9000003038_20548cztM0_level2.evt modeM0/AS1A05_069T02_9000003038_20548cztM0_level2_quad_clean.evt
Size (bytes)471,447,36069,819,840
Size449.6 MB 66.6 MB
Events in quadrant A3,490,663415,657
Events in quadrant B3,368,416425,228
Events in quadrant C3,347,061397,845
Events in quadrant D3,601,834393,792

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146782
B0142342
C0142812
D0152842

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69041201.738123%
B69041121.622248%
C69041261.825029%
D69031151.665942%

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 7709 6905 2 2 0.03% 0.03%
B 7709 6905 0 0 0.00% 0.00%
C 7709 6905 2 2 0.03% 0.03%
D 7708 6904 35 35 0.45% 0.51%

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 15 174 169478 966.84 856 837 174.4
A 14 111 17491 95.48 856 837 174.4
A 8 205 7752 39.64 856 837 174.4
B 12 111 21112 122.5 850 828 165.6
B 11 111 18469 106.54 850 828 165.6
B 14 111 16469 94.46 850 828 165.6
C 14 238 127196 657.31 811 814 192.3
C 8 208 59841 307.0 811 814 192.3
C 13 61 5640 25.1 811 814 192.3
D 1 52 263413 1297.39 825 798 202.4
D 7 238 99215 486.21 825 798 202.4
D 2 184 50031 243.23 825 798 202.4

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