ASTROSAT CZTI

Data Quality Report

Orbit 12421

Creation date: 2024-06-27T16:27:04.117092
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/AS1A04_201T01_9000001844_12421cztM0_level2.evt modeM0/AS1A04_201T01_9000001844_12421cztM0_level2_quad_clean.evt
Size (bytes)359,985,60054,060,480
Size343.3 MB 51.6 MB
Events in quadrant A2,693,677327,628
Events in quadrant B2,850,342331,208
Events in quadrant C2,242,143328,942
Events in quadrant D2,790,242313,120

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109791
B0114771
C099021
D0114531

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4779290.606822%
B47791523.180582%
C4779130.272023%
D47791503.138732%

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 4780 4780 13 13 0.27% 0.27%
B 4780 4780 111 111 2.32% 2.32%
C 4780 4780 11 11 0.23% 0.23%
D 4780 4780 140 140 2.93% 2.93%

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 13 251 358081 3108.03 563 552 115.0
A 12 189 44453 381.64 563 552 115.0
A 1 162 43801 375.97 563 552 115.0
B 4 239 495359 4667.14 558 545 106.0
B 0 190 65065 608.56 558 545 106.0
B 3 64 63077 589.81 558 545 106.0
C 15 208 104619 823.93 546 550 126.3
C 5 252 6459 46.78 546 550 126.3
C 13 61 4081 27.96 546 550 126.3
D 1 52 609223 4660.11 539 524 130.6
D 8 195 62245 472.53 539 524 130.6
D 2 234 17575 130.54 539 524 130.6

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