ASTROSAT CZTI

Data Quality Report

Orbit 00873

Creation date: 2024-06-27T14:04:07.634414
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/AS1P01_171T01_9000000126_00873cztM0_level2.evt modeM0/AS1P01_171T01_9000000126_00873cztM0_level2_quad_clean.evt
Size (bytes)1,123,922,88080,377,920
Size1.0 GB 76.7 MB
Events in quadrant A8,309,035489,753
Events in quadrant B8,887,936493,489
Events in quadrant C8,469,721482,767
Events in quadrant D7,900,411473,034

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0297390
B0314470
C0301900
D0285170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A710610.014073%
B710690.126654%
C710750.070353%
D710770.098494%

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 7106 7106 194 194 2.73% 2.73%
B 7106 7106 352 352 4.95% 4.95%
C 7107 7107 253 253 3.56% 3.56%
D 7107 7107 128 128 1.80% 1.80%

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 11 79 10502 15.97 2164 2177 521.2
A 3 111 6559 8.41 2164 2177 521.2
A 14 203 5619 6.6 2164 2177 521.2
B 0 184 70745 126.7 2282 2296 540.3
B 0 220 70595 126.42 2282 2296 540.3
B 5 249 26931 45.6 2282 2296 540.3
C 1 192 254146 432.31 2088 2168 582.9
C 3 111 28726 45.56 2088 2168 582.9
C 3 79 17977 27.12 2088 2168 582.9
D 1 4 243950 388.16 2003 2077 623.1
D 13 169 125403 197.91 2003 2077 623.1
D 2 16 17701 25.07 2003 2077 623.1

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