ASTROSAT CZTI

Data Quality Report

Orbit 29977

Creation date: 2024-06-27T20:09:25.127764
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/AS1A10_053T11_9000004302_29977cztM0_level2.evt modeM0/AS1A10_053T11_9000004302_29977cztM0_level2_quad_clean.evt
Size (bytes)1,372,389,120221,227,200
Size1.3 GB 211.0 MB
Events in quadrant A8,245,6251,449,530
Events in quadrant B15,196,0671,411,034
Events in quadrant C8,495,5001,384,300
Events in quadrant D8,574,4241,378,455

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0339183
B0558183
C0344413
D0346373

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A156171661.062944%
B156179195.884613%
C156173061.959403%
D156171310.838829%

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 19247 15620 9 9 0.05% 0.06%
B 19247 15619 415 415 2.16% 2.66%
C 19247 15620 4 4 0.02% 0.03%
D 19247 15620 22 22 0.11% 0.14%

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 15 174 105001 249.31 2099 2061 412.9
A 8 192 37460 85.73 2099 2061 412.9
A 13 254 28391 63.77 2099 2061 412.9
B 6 159 4381382 11667.43 2011 1965 375.4
B 6 36 2870903 7643.29 2011 1965 375.4
B 12 111 44690 113.83 2011 1965 375.4
C 3 233 337667 728.5 1998 2022 460.7
C 14 238 326680 704.66 1998 2022 460.7
C 2 114 37408 76.8 1998 2022 460.7
D 8 195 530872 1103.39 2055 2009 479.3
D 2 250 101182 206.91 2055 2009 479.3
D 7 69 83379 169.77 2055 2009 479.3

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