ASTROSAT CZTI

Data Quality Report

Orbit 09687

Creation date: 2024-06-27T15:49:31.775985
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/AS1T01_176T01_9000001378_09687cztM0_level2.evt modeM0/AS1T01_176T01_9000001378_09687cztM0_level2_quad_clean.evt
Size (bytes)492,333,12093,047,040
Size469.5 MB 88.7 MB
Events in quadrant A3,247,782595,355
Events in quadrant B3,467,724599,385
Events in quadrant C3,463,314590,803
Events in quadrant D4,272,360561,297

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01417589
B014667100
C014773113
D017686213

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01382
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67682022.984634%
B67672012.970297%
C67611231.819258%
D67371662.464005%

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 7036 6807 11 11 0.16% 0.16%
B 7036 6810 4 4 0.06% 0.06%
C 7036 6809 12 12 0.17% 0.18%
D 7036 6807 12 12 0.17% 0.18%

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 15 174 38907 224.3 832 814 169.8
A 0 226 7827 41.29 832 814 169.8
A 12 194 6835 35.45 832 814 169.8
B 0 214 95154 584.51 832 810 161.4
B 0 187 41570 252.53 832 810 161.4
B 10 245 31339 189.14 832 810 161.4
C 9 68 319491 1690.1 806 809 188.6
C 13 61 5933 27.17 806 809 188.6
C 3 202 2061 6.64 806 809 188.6
D 8 195 744591 3754.8 801 781 198.1
D 7 46 265819 1337.93 801 781 198.1
D 7 71 66268 330.58 801 781 198.1

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