ASTROSAT CZTI

Data Quality Report

Orbit 34308

Creation date: 2022-02-01T05:52:14.421664
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/AS1A11_047T07_9000004892_34308cztM0_level2.evt modeM0/AS1A11_047T07_9000004892_34308cztM0_level2_quad_clean.evt
Size (bytes)437,688,00092,580,480
Size417.4 MB 88.3 MB
Events in quadrant A2,390,424617,879
Events in quadrant B3,562,472618,278
Events in quadrant C2,755,457631,295
Events in quadrant D4,210,857588,814

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102453
B0138802
C0110372
D0162152

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4952110.222132%
B49522485.008078%
C4952651.312601%
D49521322.665590%

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 9226 4954 2 2 0.02% 0.04%
B 9226 4954 163 163 1.77% 3.29%
C 9226 4954 47 47 0.51% 0.95%
D 9226 4954 102 102 1.11% 2.06%

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 10 83 28509 230.19 601 591 121.3
A 9 143 23305 187.28 601 591 121.3
A 13 6 13040 102.64 601 591 121.3
B 5 172 361767 3169.5 595 582 114.0
B 5 31 307454 2692.89 595 582 114.0
B 4 171 179155 1567.03 595 582 114.0
C 15 214 210308 1536.44 593 601 136.5
C 0 10 168645 1231.19 593 601 136.5
C 3 233 22414 159.82 593 601 136.5
D 8 195 675915 4452.7 580 567 151.7
D 12 235 459637 3026.74 580 567 151.7
D 7 223 242928 1597.93 580 567 151.7

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