ASTROSAT CZTI

Data Quality Report

Orbit 11587

Creation date: 2024-06-27T16:15:32.726080
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/AS1G08_031T01_9000001702_11587cztM0_level2.evt modeM0/AS1G08_031T01_9000001702_11587cztM0_level2_quad_clean.evt
Size (bytes)1,007,003,520163,298,880
Size960.4 MB 155.7 MB
Events in quadrant A8,719,6291,014,436
Events in quadrant B8,047,6031,017,267
Events in quadrant C5,851,3801,021,855
Events in quadrant D6,982,901976,501

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0348484
B0326123
C0268583
D0301303

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02720
B02720
C02720
D02720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A132445784.364240%
B132445233.948958%
C13244260.196315%
D132442191.653579%

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 15015 13246 315 315 2.10% 2.38%
B 15015 13246 251 251 1.67% 1.89%
C 15015 13246 2 2 0.01% 0.02%
D 15015 13246 167 167 1.11% 1.26%

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 8 5 2042875 6562.0 1520 1485 311.1
A 1 162 310127 992.12 1520 1485 311.1
A 1 178 177465 565.68 1520 1485 311.1
B 4 239 1582295 5385.53 1526 1489 293.5
B 4 81 193010 652.48 1526 1489 293.5
B 11 51 98971 332.1 1526 1489 293.5
C 9 54 29413 80.74 1491 1497 345.8
C 13 61 10972 27.4 1491 1497 345.8
C 12 4 4993 10.11 1491 1497 345.8
D 1 52 552623 1547.85 1474 1431 356.1
D 13 122 326905 913.99 1474 1431 356.1
D 10 199 147628 410.55 1474 1431 356.1

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