ASTROSAT CZTI

Data Quality Report

Orbit 12040

Creation date: 2024-06-27T16:21:36.119502
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/AS1A03_085T02_9000001784_12040cztM0_level2.evt modeM0/AS1A03_085T02_9000001784_12040cztM0_level2_quad_clean.evt
Size (bytes)764,352,00088,704,000
Size728.9 MB 84.6 MB
Events in quadrant A3,385,383631,549
Events in quadrant B6,163,413579,574
Events in quadrant C3,152,612615,069
Events in quadrant D10,011,276408,923

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142913
B0228742
C0136722
D0340852

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6445821.272304%
B6445103316.027929%
C6445470.729247%
D6445271142.063615%

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 7616 6446 0 0 0.00% 0.00%
B 7616 6446 755 755 9.91% 11.71%
C 7616 6446 1 1 0.01% 0.02%
D 7616 6446 2596 2596 34.09% 40.27%

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 1 162 46122 267.08 836 820 169.6
A 1 178 24033 136.85 836 820 169.6
A 5 112 22180 125.93 836 820 169.6
B 0 85 1472151 9835.79 786 767 149.6
B 4 239 1123911 7507.9 786 767 149.6
B 15 204 211006 1405.39 786 767 149.6
C 0 207 40607 217.09 793 796 183.4
C 14 234 22063 115.97 793 796 183.4
C 13 61 5798 27.28 793 796 183.4
D 1 52 7369537 51959.76 595 579 141.8
D 8 195 169498 1191.08 595 579 141.8
D 13 104 84727 593.34 595 579 141.8

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