ASTROSAT CZTI

Data Quality Report

Orbit 35989

Creation date: 2022-07-19T00:45:52.986145
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_050T19_9000005156_35989cztM0_level2.evt modeM0/AS1A11_050T19_9000005156_35989cztM0_level2_quad_clean.evt
Size (bytes)519,120,00095,077,440
Size495.1 MB 90.7 MB
Events in quadrant A2,417,451659,730
Events in quadrant B2,690,252654,894
Events in quadrant C5,642,326585,163
Events in quadrant D4,618,809614,326

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105862
B0112781
C0203081
D0173521

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A521040.076775%
B5210370.710173%
C521095818.387716%
D52102314.433781%

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 7003 5211 0 0 0.00% 0.00%
B 7003 5211 19 19 0.27% 0.36%
C 7003 5211 925 925 13.21% 17.75%
D 7003 5211 230 230 3.28% 4.41%

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 132755 1097.7 590 576 120.4
A 13 254 7800 59.99 590 576 120.4
A 8 144 6627 50.25 590 576 120.4
B 5 172 101833 912.71 579 565 111.0
B 4 171 93525 837.83 579 565 111.0
B 0 190 92837 831.63 579 565 111.0
C 9 187 3165447 26117.12 523 526 121.2
C 15 214 200528 1650.43 523 526 121.2
C 0 207 174980 1439.6 523 526 121.2
D 12 235 1146985 8394.24 565 550 136.6
D 12 227 572993 4191.45 565 550 136.6
D 10 118 180545 1317.93 565 550 136.6

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