ASTROSAT CZTI

Data Quality Report

Orbit 19640

Creation date: 2024-06-27T18:05:05.087909
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/AS1A05_101T08_9000002922_19640cztM0_level2.evt modeM0/AS1A05_101T08_9000002922_19640cztM0_level2_quad_clean.evt
Size (bytes)478,388,160105,808,320
Size456.2 MB 100.9 MB
Events in quadrant A3,133,849694,653
Events in quadrant B3,547,689710,844
Events in quadrant C3,243,481691,379
Events in quadrant D4,135,782668,171

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132762
B0144892
C0134912
D0165292

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6298180.285805%
B6298861.365513%
C6298580.920927%
D62981091.730708%

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 7578 6299 7 7 0.09% 0.11%
B 7578 6299 53 53 0.70% 0.84%
C 7578 6299 0 0 0.00% 0.00%
D 7578 6299 56 56 0.74% 0.89%

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 5 16 57030 350.24 799 782 160.6
A 0 226 6812 37.55 799 782 160.6
A 13 254 6073 32.95 799 782 160.6
B 3 112 367450 2458.41 804 784 149.1
B 12 111 17627 112.93 804 784 149.1
B 4 216 16209 103.42 804 784 149.1
C 14 238 123853 668.1 793 801 184.2
C 3 233 17212 89.1 793 801 184.2
C 13 61 5499 25.51 793 801 184.2
D 1 52 693605 3620.56 792 773 191.4
D 7 238 317787 1656.63 792 773 191.4
D 12 218 113464 588.89 792 773 191.4

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