ASTROSAT CZTI

Data Quality Report

Orbit 46773

Creation date: 2024-06-27T23:27:27.530449
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/AS1A13_053T01_9000006266_46773cztM0_level2.fits modeM0/AS1A13_053T01_9000006266_46773cztM0_level2_quad_clean.evt
Size (bytes)1,379,658,240294,920,640
Size1.3 GB 281.3 MB
Events in quadrant A18,234,6101,902,956
Events in quadrant B11,249,6442,002,975
Events in quadrant C9,155,9231,942,041
Events in quadrant D10,953,8091,763,885

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03880
B03880
C03880
D03880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0659853
B0465013
C0414193
D0467343

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A191108984.699110%
B191104802.511774%
C191113641.904662%
D191117193.762231%

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 20250 19110 224 224 1.11% 1.17%
B 20250 19112 79 79 0.39% 0.41%
C 20251 19112 182 182 0.90% 0.95%
D 20251 19112 535 535 2.64% 2.80%

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 10 83 8840402 20599.52 2064 2013 429.1
A 13 248 736044 1710.8 2064 2013 429.1
A 9 191 600179 1394.14 2064 2013 429.1
B 3 112 2366942 5842.42 2061 1995 404.8
B 4 171 363906 894.07 2061 1995 404.8
B 0 245 110181 267.26 2061 1995 404.8
C 1 241 678373 1415.79 2046 2058 477.7
C 3 233 285136 592.59 2046 2058 477.7
C 14 254 151510 312.86 2046 2058 477.7
D 13 249 1316927 2560.12 2046 1981 513.6
D 13 138 555084 1076.86 2046 1981 513.6
D 1 52 383984 743.74 2046 1981 513.6

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