ASTROSAT CZTI

Data Quality Report

Orbit 16393

Creation date: 2024-06-27T17:22:02.369347
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_069T02_9000002422_16393cztM0_level2.evt modeM0/AS1A05_069T02_9000002422_16393cztM0_level2_quad_clean.evt
Size (bytes)299,891,52045,365,760
Size286.0 MB 43.3 MB
Events in quadrant A2,054,825272,783
Events in quadrant B2,497,968275,556
Events in quadrant C2,077,661266,113
Events in quadrant D2,160,640258,331

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A088682
B0101231
C088391
D093711

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4263461.079052%
B4263892.087732%
C4263591.384002%
D4263511.196341%

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 5014 4264 0 0 0.00% 0.00%
B 5014 4264 34 34 0.68% 0.80%
C 5014 4265 1 1 0.02% 0.02%
D 5014 4264 10 10 0.20% 0.23%

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 15 223 20501 188.32 520 508 106.2
A 9 143 17869 163.53 520 508 106.2
A 15 174 13757 124.8 520 508 106.2
B 10 16 228713 2239.37 520 506 101.9
B 15 35 100705 983.24 520 506 101.9
B 3 209 41805 405.26 520 506 101.9
C 14 238 75961 635.37 500 503 118.8
C 3 233 39836 331.19 500 503 118.8
C 10 169 8274 65.43 500 503 118.8
D 12 110 189771 1509.4 506 491 125.4
D 1 52 16971 131.42 506 491 125.4
D 10 70 14194 109.27 506 491 125.4

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