ASTROSAT CZTI

Data Quality Report

Orbit 16617

Creation date: 2024-06-27T17:25:10.786528
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_064T01_9000002450_16617cztM0_level2.evt modeM0/AS1A05_064T01_9000002450_16617cztM0_level2_quad_clean.evt
Size (bytes)474,485,760128,865,600
Size452.5 MB 122.9 MB
Events in quadrant A2,991,782875,517
Events in quadrant B3,564,839888,029
Events in quadrant C4,040,158865,344
Events in quadrant D3,361,178850,532

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128453
B0146722
C0161822
D0138902

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6067490.807648%
B6067981.615296%
C60672403.955827%
D6067520.857096%

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 7433 6069 3 3 0.04% 0.05%
B 7433 6069 6 6 0.08% 0.10%
C 7433 6069 44 44 0.59% 0.72%
D 7433 6069 13 13 0.17% 0.21%

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 13 248 18556 116.65 768 752 152.6
A 15 174 18254 114.67 768 752 152.6
A 0 226 6831 39.83 768 752 152.6
B 15 35 180643 1269.66 771 751 141.7
B 0 189 125188 878.26 771 751 141.7
B 3 209 90456 633.13 771 751 141.7
C 3 233 913971 5298.56 751 758 172.4
C 14 238 117273 676.03 751 758 172.4
C 7 247 49159 280.83 751 758 172.4
D 1 52 366442 2015.78 761 740 181.4
D 10 70 51675 280.76 761 740 181.4
D 2 234 25759 137.91 761 740 181.4

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