ASTROSAT CZTI

Data Quality Report

Orbit 20220109_A11_034T07_9000004860_level2

Creation date: 2022-01-10T17:52:01.258196
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_034T07_9000004860cztM0_level2_bc.evt modeM0/AS1A11_034T07_9000004860cztM0_level2_quad_clean.evt
Size (bytes)561,012,480144,987,840
Size535.0 MB 138.3 MB
Events in quadrant A2,350,70682,055
Events in quadrant B3,661,6051,238,101
Events in quadrant C4,172,1081,208,646
Events in quadrant D6,089,4981,143,279

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02100
B02100
C02100
D02100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0514420
B0264730
C0273940
D0349870

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0570
B0570
C0570
D0570

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A103151031399.980611%
B103152832.743577%
C103153803.683955%
D103155965.777993%

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 14377 6680 1 1 0.01% 0.01%
B 14378 10314 24 24 0.17% 0.23%
C 14378 10314 57 57 0.40% 0.55%
D 14378 10314 82 82 0.57% 0.80%

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 15 169 2168999 168162.14 45 45 12.9
A 13 6 3028 231.28 45 45 12.9
A 10 83 2082 157.93 45 45 12.9
B 5 172 796554 7063.49 574 564 112.7
B 0 190 205992 1822.94 574 564 112.7
B 0 219 82205 724.47 574 564 112.7
C 4 254 984528 7784.19 554 551 126.4
C 15 214 428020 3381.68 554 551 126.4
C 0 10 312535 2468.09 554 551 126.4
D 8 195 1638322 12288.37 555 539 133.3
D 13 249 420796 3153.21 555 539 133.3
D 7 223 367897 2756.31 555 539 133.3

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