ASTROSAT CZTI

Data Quality Report

Orbit 18369

Creation date: 2024-06-27T17:48:56.250310
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/AS1A06_006T01_9000002724_18369cztM0_level2.evt modeM0/AS1A06_006T01_9000002724_18369cztM0_level2_quad_clean.evt
Size (bytes)446,976,00066,093,120
Size426.3 MB 63.0 MB
Events in quadrant A3,142,806395,117
Events in quadrant B3,289,936402,382
Events in quadrant C3,428,939392,153
Events in quadrant D3,259,505384,338

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128242
B0132482
C0136812
D0132452

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6119270.441249%
B6119350.571989%
C6119861.405458%
D6119380.621017%

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 7449 6120 2 2 0.03% 0.03%
B 7449 6120 0 0 0.00% 0.00%
C 7449 6120 7 7 0.09% 0.11%
D 7449 6120 9 9 0.12% 0.15%

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 15 174 27607 165.36 805 791 162.2
A 4 2 13858 80.58 805 791 162.2
A 0 226 7131 39.1 805 791 162.2
B 7 220 41854 270.14 809 789 152.0
B 0 189 39683 255.85 809 789 152.0
B 10 245 22727 144.31 809 789 152.0
C 0 207 142849 786.02 780 786 180.7
C 3 233 122731 674.71 780 786 180.7
C 14 238 121904 670.14 780 786 180.7
D 1 52 158303 830.29 786 766 189.7
D 14 34 47911 248.47 786 766 189.7
D 12 110 27656 141.72 786 766 189.7

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