ASTROSAT CZTI

Data Quality Report

Orbit 16914

Creation date: 2024-06-27T17:29:26.152178
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/AS1T03_030T01_9000002512_16914cztM0_level2.evt modeM0/AS1T03_030T01_9000002512_16914cztM0_level2_quad_clean.evt
Size (bytes)1,763,029,440230,639,040
Size1.6 GB 220.0 MB
Events in quadrant A22,577,5011,309,689
Events in quadrant B9,133,0811,532,698
Events in quadrant C9,376,0271,465,032
Events in quadrant D11,041,9691,384,029

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0801774
B0395574
C0400164
D0457454

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03840
B03840
C03840
D03840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18739561329.953573%
B187392191.168686%
C187392391.275415%
D1873910705.710017%

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 20570 18742 3794 3794 18.44% 20.24%
B 20570 18743 5 5 0.02% 0.03%
C 20570 18743 4 4 0.02% 0.02%
D 20570 18743 423 423 2.06% 2.26%

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 15023055 38337.14 1931 1887 391.8
A 12 189 95731 239.51 1931 1887 391.8
A 13 228 27600 65.62 1931 1887 391.8
B 15 35 228975 533.25 2222 2161 425.3
B 0 197 58041 131.38 2222 2161 425.3
B 12 111 50943 114.69 2222 2161 425.3
C 3 233 735896 1467.86 2130 2142 499.9
C 14 238 325350 646.57 2130 2142 499.9
C 13 61 15145 26.01 2130 2142 499.9
D 1 52 2561279 4980.35 2110 2053 513.9
D 12 235 181753 349.7 2110 2053 513.9
D 10 199 108739 207.61 2110 2053 513.9

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