ASTROSAT CZTI

Data Quality Report

Orbit 16472

Creation date: 2024-06-27T17:23:16.680598
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/AS1C04_008T01_9000002434_16472cztM0_level2.evt modeM0/AS1C04_008T01_9000002434_16472cztM0_level2_quad_clean.evt
Size (bytes)75,821,76019,745,280
Size72.3 MB 18.8 MB
Events in quadrant A746,290128,290
Events in quadrant B517,352145,304
Events in quadrant C503,748133,373
Events in quadrant D472,697128,547

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027531
B020781
C020391
D019001

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78010313.205128%
B78081.025641%
C780222.820513%
D78050.641026%

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 781 781 87 87 11.14% 11.14%
B 781 781 2 2 0.26% 0.26%
C 781 781 1 1 0.13% 0.13%
D 781 781 5 5 0.64% 0.64%

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 325566 13647.71 109 107 23.8
A 0 226 991 37.07 109 107 23.8
A 3 137 722 25.79 109 107 23.8
B 15 35 19922 796.65 120 117 24.9
B 3 209 7993 316.81 120 117 24.9
B 4 173 7780 308.24 120 117 24.9
C 3 233 40110 1420.12 113 114 28.2
C 14 238 18181 641.5 113 114 28.2
C 7 247 2934 100.13 113 114 28.2
D 2 120 21574 738.04 111 108 29.1
D 8 195 10718 364.79 111 108 29.1
D 1 52 9114 309.64 111 108 29.1

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