ASTROSAT CZTI

Data Quality Report

Orbit 33174

Creation date: 2024-06-27T20:45:43.013726
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/AS1A11_080T02_9000004768_33174cztM0_level2.evt modeM0/AS1A11_080T02_9000004768_33174cztM0_level2_quad_clean.evt
Size (bytes)464,924,16069,379,200
Size443.4 MB 66.2 MB
Events in quadrant A2,485,719440,615
Events in quadrant B3,585,711443,488
Events in quadrant C2,816,313433,716
Events in quadrant D4,832,221410,933

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106903
B0140402
C0117552
D0184172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A531470.131728%
B53141653.105006%
C5314751.411366%
D5314921.731276%

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 7077 5315 0 0 0.00% 0.00%
B 7077 5315 97 97 1.37% 1.83%
C 7077 5315 64 64 0.90% 1.20%
D 7077 5315 61 61 0.86% 1.15%

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 13 254 9482 69.6 639 626 127.2
A 13 6 7723 55.77 639 626 127.2
A 3 137 5744 40.22 639 626 127.2
B 0 219 506146 4213.57 631 616 120.0
B 5 172 487700 4059.82 631 616 120.0
B 15 85 39183 321.45 631 616 120.0
C 0 10 235173 1665.94 614 619 140.8
C 9 187 112773 796.58 614 619 140.8
C 1 241 31714 220.85 614 619 140.8
D 10 203 977837 5934.38 614 599 164.7
D 8 195 917931 5570.6 614 599 164.7
D 2 250 159501 964.95 614 599 164.7

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