ASTROSAT CZTI

Data Quality Report

Orbit 00903

Creation date: 2024-06-27T14:04:32.088734
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/AS1P01_161T05_9000000180_00903cztM0_level2.evt modeM0/AS1P01_161T05_9000000180_00903cztM0_level2_quad_clean.evt
Size (bytes)1,387,189,44063,815,040
Size1.3 GB 60.9 MB
Events in quadrant A9,262,566368,725
Events in quadrant B11,666,529360,409
Events in quadrant C9,377,488367,750
Events in quadrant D11,207,684310,906

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0328760
B0400870
C0332040
D0388060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75291181.567273%
B75294956.574578%
C7530861.142098%
D7530104413.864542%

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 7644 7530 378 378 4.95% 5.02%
B 7644 7530 1307 1307 17.10% 17.36%
C 7645 7531 398 398 5.21% 5.28%
D 7645 7531 1623 1623 21.23% 21.55%

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 15 127 95064 160.11 2389 2406 578.7
A 11 79 10317 13.67 2389 2406 578.7
A 3 111 7996 9.66 2389 2406 578.7
B 3 0 1472001 2556.64 2445 2457 574.8
B 0 87 566091 980.58 2445 2457 574.8
B 0 220 142025 242.81 2445 2457 574.8
C 9 83 337821 522.3 2281 2363 642.3
C 9 54 50342 74.7 2281 2363 642.3
C 3 111 34179 49.54 2281 2363 642.3
D 13 73 2419131 3768.99 2051 2117 641.3
D 12 188 948608 1475.92 2051 2117 641.3
D 2 16 122621 187.91 2051 2117 641.3

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