ASTROSAT CZTI

Data Quality Report

Orbit 39093

Creation date: 2024-06-27T22:00:19.016905
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/AS1T05_067T01_9000005432_39093cztM0_level2.fits modeM0/AS1T05_067T01_9000005432_39093cztM0_level2_quad_clean.evt
Size (bytes)1,070,596,800266,273,280
Size1021.0 MB 253.9 MB
Events in quadrant A9,812,0131,794,573
Events in quadrant B7,765,5521,836,548
Events in quadrant C10,758,8931,719,500
Events in quadrant D10,031,5271,586,345

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0396224
B0339163
C0421503
D0408013

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03340
B03340
C03340
D03340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16314770.471987%
B16314980.600711%
C163143221.973765%
D163143442.108618%

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 21777 16318 26 26 0.12% 0.16%
B 21777 16318 51 51 0.23% 0.31%
C 21777 16318 267 267 1.23% 1.64%
D 21777 16318 281 281 1.29% 1.72%

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 15 223 1124300 3020.4 1840 1803 371.6
A 10 83 1088682 2924.55 1840 1803 371.6
A 12 16 285782 764.13 1840 1803 371.6
B 5 184 311016 882.24 1825 1774 350.5
B 5 172 119826 336.79 1825 1774 350.5
B 0 230 89789 251.1 1825 1774 350.5
C 15 208 2612038 6357.67 1774 1785 410.6
C 15 214 671934 1632.25 1774 1785 410.6
C 9 187 495173 1201.72 1774 1785 410.6
D 12 235 1269255 2938.23 1772 1721 431.4
D 2 249 1139289 2636.96 1772 1721 431.4
D 1 47 327062 754.16 1772 1721 431.4

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