ASTROSAT CZTI

Data Quality Report

Orbit 01261

Creation date: 2024-06-27T14:09:59.706527
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/AS1G04_011T02_9000000226_01261cztM0_level2.evt modeM0/AS1G04_011T02_9000000226_01261cztM0_level2_quad_clean.evt
Size (bytes)1,117,918,08099,912,960
Size1.0 GB 95.3 MB
Events in quadrant A8,711,887647,959
Events in quadrant B8,242,427661,695
Events in quadrant C7,885,254652,939
Events in quadrant D8,591,776614,929

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0304992
B0290331
C0279821
D0301401

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64252774.311284%
B6425661.027237%
C6425781.214008%
D64253595.587549%

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 7335 6425 721 721 9.83% 11.22%
B 7335 6425 326 326 4.44% 5.07%
C 7334 6424 262 262 3.57% 4.08%
D 7335 6425 740 740 10.09% 11.52%

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 4 32 1013364 2115.64 1999 2007 478.0
A 8 14 15435 28.09 1999 2007 478.0
A 11 79 8512 13.61 1999 2007 478.0
B 12 52 77411 154.32 2079 2085 488.1
B 15 22 60946 120.59 2079 2085 488.1
B 5 191 47998 94.06 2079 2085 488.1
C 15 241 285364 530.65 1925 1993 534.0
C 3 79 40213 71.57 1925 1993 534.0
C 3 111 30715 53.79 1925 1993 534.0
D 13 169 873695 1542.8 1833 1901 565.1
D 10 84 602802 1063.41 1833 1901 565.1
D 2 88 183681 321.69 1833 1901 565.1

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