ASTROSAT CZTI

Data Quality Report

Orbit 20930

Creation date: 2024-06-27T18:21:20.957500
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_025T17_9000003084_20930cztM0_level2.evt modeM0/AS1A05_025T17_9000003084_20930cztM0_level2_quad_clean.evt
Size (bytes)398,943,36091,926,720
Size380.5 MB 87.7 MB
Events in quadrant A2,777,167602,365
Events in quadrant B3,103,823612,447
Events in quadrant C2,886,793602,469
Events in quadrant D2,941,157582,596

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113721
B0124971
C0116881
D0118751

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A548770.127574%
B5487420.765446%
C5487771.403317%
D5487110.200474%

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 6897 5488 0 0 0.00% 0.00%
B 6897 5488 10 10 0.14% 0.18%
C 6897 5488 0 0 0.00% 0.00%
D 6897 5488 4 4 0.06% 0.07%

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 0 226 6281 39.21 722 709 142.1
A 3 137 5161 31.33 722 709 142.1
A 12 194 5094 30.86 722 709 142.1
B 7 220 177093 1344.93 721 705 131.2
B 0 229 44844 336.55 721 705 131.2
B 0 219 33962 253.58 721 705 131.2
C 14 238 116174 712.8 708 715 162.0
C 7 247 8691 49.24 708 715 162.0
C 13 61 5153 27.4 708 715 162.0
D 1 52 173466 1021.88 713 695 169.1
D 2 234 18160 103.3 713 695 169.1
D 9 1 16501 93.49 713 695 169.1

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