ASTROSAT CZTI

Data Quality Report

Orbit 13145

Creation date: 2024-06-27T16:36:54.772814
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_011T01_9000001940_13145cztM0_level2.evt modeM0/AS1T02_011T01_9000001940_13145cztM0_level2_quad_clean.evt
Size (bytes)465,926,40092,413,440
Size444.3 MB 88.1 MB
Events in quadrant A3,239,987589,609
Events in quadrant B4,286,076590,559
Events in quadrant C3,011,808595,564
Events in quadrant D3,126,897565,441

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139452
B0170961
C0134181
D0138201

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6556640.976205%
B65564536.909701%
C6556530.808420%
D6556600.915192%

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 7322 6558 2 2 0.03% 0.03%
B 7322 6558 225 225 3.07% 3.43%
C 7322 6558 2 2 0.03% 0.03%
D 7322 6558 6 6 0.08% 0.09%

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 12 189 160056 1011.77 771 755 157.4
A 4 2 66063 414.79 771 755 157.4
A 1 162 17876 108.74 771 755 157.4
B 4 239 1140818 7974.59 753 733 143.0
B 0 85 114710 797.24 753 733 143.0
B 3 209 21539 145.53 753 733 143.0
C 0 207 16834 90.01 766 769 178.5
C 13 61 5472 26.35 766 769 178.5
C 8 128 4432 20.52 766 769 178.5
D 1 52 67776 366.73 757 736 182.8
D 5 222 48978 263.9 757 736 182.8
D 8 195 43737 235.23 757 736 182.8

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