ASTROSAT CZTI

Data Quality Report

Orbit 15648

Creation date: 2024-06-27T17:11:36.169819
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/AS1T02_086T01_9000002316_15648cztM0_level2.evt modeM0/AS1T02_086T01_9000002316_15648cztM0_level2_quad_clean.evt
Size (bytes)471,744,00091,157,760
Size449.9 MB 86.9 MB
Events in quadrant A3,278,825584,136
Events in quadrant B3,457,917588,163
Events in quadrant C3,301,540580,300
Events in quadrant D3,815,848563,511

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135033
B0139882
C0136192
D0151962

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63671031.617716%
B63671712.685723%
C63671662.607193%
D63672994.696089%

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 7593 6368 1 1 0.01% 0.02%
B 7593 6368 34 34 0.45% 0.53%
C 7593 6368 0 0 0.00% 0.00%
D 7593 6368 206 206 2.71% 3.23%

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 15 157 56823 338.39 833 819 165.5
A 13 248 7924 42.93 833 819 165.5
A 0 226 7420 39.89 833 819 165.5
B 0 189 140316 903.96 827 808 154.3
B 3 209 34548 218.62 827 808 154.3
B 4 216 22740 142.11 827 808 154.3
C 14 238 126198 678.16 806 812 184.9
C 3 233 27239 142.93 806 812 184.9
C 13 61 5671 26.28 806 812 184.9
D 1 52 663544 3398.83 810 786 195.0
D 4 95 35748 179.3 810 786 195.0
D 2 234 21732 107.42 810 786 195.0

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