ASTROSAT CZTI

Data Quality Report

Orbit 39249

Creation date: 2024-06-27T22:02:16.369121
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/AS1A12_095T01_9000005450_39249cztM0_level2.fits modeM0/AS1A12_095T01_9000005450_39249cztM0_level2_quad_clean.evt
Size (bytes)652,803,840116,686,080
Size622.6 MB 111.3 MB
Events in quadrant A4,070,829853,901
Events in quadrant B3,964,556855,869
Events in quadrant C3,410,449806,235
Events in quadrant D12,156,410512,076

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164411
B0164961
C0145691
D0411511

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72481001.379691%
B72481121.545254%
C724840.055188%
D7248299241.280353%

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 9311 7249 77 77 0.83% 1.06%
B 9311 7249 88 88 0.95% 1.21%
C 9311 7249 0 0 0.00% 0.00%
D 9311 7248 2393 2393 25.70% 33.02%

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 10 83 487009 2970.01 812 797 163.7
A 13 248 425565 2594.68 812 797 163.7
A 15 174 16661 96.9 812 797 163.7
B 5 172 527335 3454.46 802 781 152.4
B 0 190 165202 1078.68 802 781 152.4
B 5 255 75694 491.47 802 781 152.4
C 15 214 309214 1674.81 791 794 184.2
C 15 159 10890 54.82 791 794 184.2
C 0 10 5707 26.68 791 794 184.2
D 12 235 8715998 53183.63 666 648 163.9
D 5 222 441528 2690.38 666 648 163.9
D 12 233 129110 783.91 666 648 163.9

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