ASTROSAT CZTI

Data Quality Report

Orbit 35053

Creation date: 2024-06-27T21:08:34.368134
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/AS1A10_057T01_9000005022_35053cztM0_level2.evt modeM0/AS1A10_057T01_9000005022_35053cztM0_level2_quad_clean.evt
Size (bytes)1,298,511,360203,221,440
Size1.2 GB 193.8 MB
Events in quadrant A7,424,8151,311,467
Events in quadrant B9,249,0501,295,880
Events in quadrant C7,851,5101,293,871
Events in quadrant D13,740,4111,170,000

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320975
B0375154
C0322324
D0519254

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0440

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15714330.210004%
B157145653.595520%
C15714260.165458%
D1571410626.758305%

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 19892 15717 9 9 0.05% 0.06%
B 19892 15717 321 321 1.61% 2.04%
C 19892 15717 13 13 0.07% 0.08%
D 19892 15717 957 957 4.81% 6.09%

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 182199 489.07 1837 1801 368.9
A 9 143 57773 151.74 1837 1801 368.9
A 7 16 32284 82.64 1837 1801 368.9
B 5 172 1288702 3784.6 1797 1750 340.0
B 5 200 506166 1483.36 1797 1750 340.0
B 4 232 172438 501.95 1797 1750 340.0
C 15 214 646935 1561.6 1787 1800 413.1
C 14 67 101173 240.54 1787 1800 413.1
C 0 10 81009 191.73 1787 1800 413.1
D 8 195 3138401 7538.37 1724 1673 416.1
D 13 249 1451042 3483.21 1724 1673 416.1
D 5 223 719085 1724.13 1724 1673 416.1

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