ASTROSAT CZTI

Data Quality Report

Orbit 22502

Creation date: 2024-06-27T18:42:00.297523
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/AS1A07_144T02_9000003340_22502cztM0_level2.evt modeM0/AS1A07_144T02_9000003340_22502cztM0_level2_quad_clean.evt
Size (bytes)1,075,608,000194,898,240
Size1.0 GB 185.9 MB
Events in quadrant A8,501,2891,432,063
Events in quadrant B8,906,1551,463,702
Events in quadrant C4,384,714373,107
Events in quadrant D9,535,9901,374,179

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0371383
B0381203
C0237333
D0406603

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182531370.750562%
B182532251.232674%
C180851291271.396185%
D182542641.446258%

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 20213 18253 7 7 0.03% 0.04%
B 20213 18253 55 55 0.27% 0.30%
C 20213 18085 2 2 0.01% 0.01%
D 20214 18254 147 147 0.73% 0.81%

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 6 240 33890 72.23 2189 2143 439.6
A 13 254 25860 53.96 2189 2143 439.6
A 3 137 19419 39.3 2189 2143 439.6
B 5 172 221833 528.39 2176 2120 415.8
B 15 33 105691 249.08 2176 2120 415.8
B 12 111 52102 120.2 2176 2120 415.8
C 7 119 1827001 12384.82 619 623 147.5
C 14 238 99169 668.25 619 623 147.5
C 0 10 31690 210.67 619 623 147.5
D 1 52 828955 1594.54 2128 2064 518.6
D 2 136 301043 576.54 2128 2064 518.6
D 13 172 163743 311.77 2128 2064 518.6

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