ASTROSAT CZTI

Data Quality Report

Orbit 18977

Creation date: 2024-06-27T17:57:24.055816
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/AS1A05_166T04_9000002826_18977cztM0_level2.evt modeM0/AS1A05_166T04_9000002826_18977cztM0_level2_quad_clean.evt
Size (bytes)546,088,32097,608,960
Size520.8 MB 93.1 MB
Events in quadrant A3,302,534640,489
Events in quadrant B5,513,687637,554
Events in quadrant C3,533,546622,608
Events in quadrant D3,753,883608,112

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134602
B0205012
C0142062
D0151642

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6404620.968145%
B640476511.945659%
C64041271.983136%
D6404420.655840%

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 7684 6405 0 0 0.00% 0.00%
B 7684 6405 514 514 6.69% 8.02%
C 7684 6405 17 17 0.22% 0.27%
D 7684 6405 7 7 0.09% 0.11%

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 11 29 7771 40.2 855 837 172.5
A 0 226 7539 38.86 855 837 172.5
A 13 254 6773 34.42 855 837 172.5
B 3 112 2219781 14554.31 809 791 152.5
B 7 220 84712 550.43 809 791 152.5
B 4 216 19049 119.75 809 791 152.5
C 0 207 200264 1052.53 819 828 189.5
C 14 238 128873 675.76 819 828 189.5
C 3 233 9249 44.44 819 828 189.5
D 7 238 259118 1273.2 837 815 202.9
D 1 52 187403 919.71 837 815 202.9
D 12 218 119932 587.14 837 815 202.9

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