ASTROSAT CZTI

Data Quality Report

Orbit 18376

Creation date: 2024-06-27T17:49:00.979496
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/AS1A06_006T01_9000002724_18376cztM0_level2.evt modeM0/AS1A06_006T01_9000002724_18376cztM0_level2_quad_clean.evt
Size (bytes)1,305,728,640227,949,120
Size1.2 GB 217.4 MB
Events in quadrant A8,895,7381,436,264
Events in quadrant B9,153,5621,445,057
Events in quadrant C9,199,6061,408,135
Events in quadrant D11,055,9931,351,032

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0386323
B0389103
C0394263
D0449553

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A183331790.976381%
B183331841.003655%
C183333031.652757%
D183347884.298026%

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 20138 18335 52 52 0.26% 0.28%
B 20138 18335 14 14 0.07% 0.08%
C 20138 18335 65 65 0.32% 0.35%
D 20139 18336 702 702 3.49% 3.83%

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 15 174 343608 770.26 2200 2149 443.3
A 4 2 84788 186.42 2200 2149 443.3
A 0 226 19535 39.22 2200 2149 443.3
B 3 64 267095 627.68 2201 2149 422.1
B 0 189 93449 216.3 2201 2149 422.1
B 0 197 65207 149.39 2201 2149 422.1
C 0 207 498300 1001.07 2106 2117 495.7
C 14 238 320443 642.23 2106 2117 495.7
C 3 233 165226 329.08 2106 2117 495.7
D 7 238 2368202 4564.5 2117 2050 518.4
D 12 110 242764 464.36 2117 2050 518.4
D 1 52 172168 328.17 2117 2050 518.4

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