ASTROSAT CZTI

Data Quality Report

Orbit 20210417_A10_071T04_9000004316_level2

Creation date: 2021-04-19T13:46:30.940180
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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_071T04_9000004316cztM0_level2_bc.evt modeM0/AS1A10_071T04_9000004316cztM0_level2_quad_clean.evt
Size (bytes)2,477,113,920738,570,240
Size2.3 GB 704.4 MB
Events in quadrant A12,970,4054,700,828
Events in quadrant B28,811,9534,682,860
Events in quadrant C13,293,1974,462,847
Events in quadrant D15,905,4074,453,110

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0990
B0990
C0990
D0990

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012080
B012080
C012080
D012080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01243530
B01799550
C01278030
D01313940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A593587231.218033%
B5935812532.110920%
C5935813812.326561%
D593585710.961960%

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 69098 59362 1 1 0.00% 0.00%
B 69098 59361 6 6 0.01% 0.01%
C 69098 59362 2 2 0.00% 0.00%
D 69098 59360 54 54 0.08% 0.09%

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 8 192 126476 174.33 3322 3270 706.8
A 13 254 103892 142.37 3322 3270 706.8
A 12 96 22840 27.69 3322 3270 706.8
B 6 159 15966173 25591.71 3319 3245 623.8
B 10 247 76439 117.34 3319 3245 623.8
B 0 183 63249 96.2 3319 3245 623.8
C 3 233 852392 1166.99 3137 3132 727.7
C 15 208 145597 195.76 3137 3132 727.7
C 2 114 111201 148.5 3137 3132 727.7
D 8 195 1488730 2047.92 3201 3123 725.4
D 7 80 1383787 1903.25 3201 3123 725.4
D 1 52 408168 558.36 3201 3123 725.4

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