ASTROSAT CZTI

Data Quality Report

Orbit 15287

Creation date: 2024-06-27T17:06:17.128782
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/AS1A04_223T01_9000002258_15287cztM0_level2.evt modeM0/AS1A04_223T01_9000002258_15287cztM0_level2_quad_clean.evt
Size (bytes)478,975,68091,247,040
Size456.8 MB 87.0 MB
Events in quadrant A3,143,216588,470
Events in quadrant B4,679,830577,974
Events in quadrant C3,196,341583,380
Events in quadrant D3,038,956554,185

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137393
B0180412
C0137572
D0137262

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6589380.576719%
B65895368.134770%
C6589180.273183%
D6589310.470481%

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 7615 6591 1 1 0.01% 0.02%
B 7615 6591 387 387 5.08% 5.87%
C 7615 6591 0 0 0.00% 0.00%
D 7615 6591 3 3 0.04% 0.05%

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 9 143 19167 111.43 812 797 164.9
A 0 226 7263 39.22 812 797 164.9
A 12 194 6170 32.59 812 797 164.9
B 10 16 1231453 8175.56 788 769 150.5
B 3 64 78945 519.33 788 769 150.5
B 0 219 52280 342.19 788 769 150.5
C 3 233 145659 803.73 780 784 180.3
C 4 238 7151 35.32 780 784 180.3
C 13 61 5546 26.42 780 784 180.3
D 2 234 25780 131.7 777 754 190.0
D 10 70 20694 104.94 777 754 190.0
D 2 152 19486 98.58 777 754 190.0

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