ASTROSAT CZTI

Data Quality Report

Orbit 11709

Creation date: 2024-06-27T16:17:12.058531
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_227T01_9000001724_11709cztM0_level2.evt modeM0/AS1A04_227T01_9000001724_11709cztM0_level2_quad_clean.evt
Size (bytes)535,063,68064,117,440
Size510.3 MB 61.1 MB
Events in quadrant A4,373,660376,391
Events in quadrant B4,126,275381,378
Events in quadrant C3,158,593381,622
Events in quadrant D4,117,032360,166

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172273
B0162022
C0131822
D0163062

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63261081.707240%
B63262503.951944%
C6326180.284540%
D63261161.833702%

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 7662 6328 36 36 0.47% 0.57%
B 7662 6328 122 122 1.59% 1.93%
C 7662 6328 0 0 0.00% 0.00%
D 7662 6328 82 82 1.07% 1.30%

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 5 870695 5226.83 827 813 166.4
A 1 162 111081 662.56 827 813 166.4
A 1 178 60194 356.8 827 813 166.4
B 4 239 391636 2517.54 832 815 155.2
B 3 64 337988 2171.96 832 815 155.2
B 15 204 46518 294.4 832 815 155.2
C 13 61 6047 28.17 808 814 185.8
C 4 175 4903 22.01 808 814 185.8
C 12 4 2424 8.67 808 814 185.8
D 7 80 293779 1564.08 790 770 187.3
D 8 195 226768 1206.37 790 770 187.3
D 1 52 184094 978.58 790 770 187.3

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