ASTROSAT CZTI

Data Quality Report

Orbit 14694

Creation date: 2024-06-27T16:58:34.200222
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/AS1A04_011T07_9000002172_14694cztM0_level2.evt modeM0/AS1A04_011T07_9000002172_14694cztM0_level2_quad_clean.evt
Size (bytes)527,693,76096,094,080
Size503.2 MB 91.6 MB
Events in quadrant A3,558,618623,754
Events in quadrant B3,366,165616,922
Events in quadrant C4,122,848603,544
Events in quadrant D4,469,113588,402

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149723
B0144612
C0169062
D0182622

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6848250.365070%
B6848410.598715%
C6848160.233645%
D68482393.490070%

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 7655 6850 0 0 0.00% 0.00%
B 7655 6850 14 14 0.18% 0.20%
C 7655 6850 0 0 0.00% 0.00%
D 7655 6850 208 208 2.72% 3.04%

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 8 15 277794 1638.95 836 818 169.0
A 12 189 52661 306.77 836 818 169.0
A 0 226 7400 38.95 836 818 169.0
B 10 16 70875 443.77 828 807 157.9
B 0 197 21304 129.82 828 807 157.9
B 0 229 20699 125.98 828 807 157.9
C 3 233 973556 5228.35 800 807 186.1
C 0 207 14309 72.57 800 807 186.1
C 3 234 6998 33.28 800 807 186.1
D 12 110 1228107 5836.35 791 776 210.3
D 9 1 121149 572.41 791 776 210.3
D 2 234 31055 143.99 791 776 210.3

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