ASTROSAT CZTI

Data Quality Report

Orbit 38846

Creation date: 2024-06-27T21:57:11.190894
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/AS1A12_077T06_9000005408_38846cztM0_level2.fits modeM0/AS1A12_077T06_9000005408_38846cztM0_level2_quad_clean.evt
Size (bytes)315,685,44085,538,880
Size301.1 MB 81.6 MB
Events in quadrant A2,633,863572,567
Events in quadrant B3,026,957587,982
Events in quadrant C2,455,668558,637
Events in quadrant D3,165,698507,903

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108372
B0124731
C0104751
D0128281

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5178170.328312%
B5178280.540749%
C517820.038625%
D51781062.047122%

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 6491 5179 10 10 0.15% 0.19%
B 6491 5179 6 6 0.09% 0.12%
C 6491 5179 0 0 0.00% 0.00%
D 6491 5179 81 81 1.25% 1.56%

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 10 83 334523 2803.05 578 564 119.1
A 9 143 40707 336.94 578 564 119.1
A 13 248 17784 144.53 578 564 119.1
B 5 184 716561 6383.12 574 558 112.2
B 5 172 15914 136.9 574 558 112.2
B 12 111 14238 121.96 574 558 112.2
C 15 214 215039 1609.05 565 569 133.3
C 3 233 26806 196.84 565 569 133.3
C 15 208 7031 48.48 565 569 133.3
D 12 235 291560 2122.27 558 543 137.1
D 2 249 162901 1184.01 558 543 137.1
D 10 118 143622 1043.42 558 543 137.1

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