ASTROSAT CZTI

Data Quality Report

Orbit 36856

Creation date: 2024-06-27T21:32:26.478648
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_075T01_9000005244_36856cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36856cztM0_level2_quad_clean.evt
Size (bytes)359,424,00061,274,880
Size342.8 MB 58.4 MB
Events in quadrant A2,396,287509,762
Events in quadrant B752,0898,422
Events in quadrant C2,791,930524,923
Events in quadrant D4,604,271464,083

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103403
B050032
C0113802
D0170502

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A492760.121778%
B49274927100.000000%
C4927951.928151%
D492756611.487721%

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 7050 4928 4 4 0.06% 0.08%
B 7049 4926 0 0 0.00% 0.00%
C 7050 4928 62 62 0.88% 1.26%
D 7050 4928 572 572 8.11% 11.61%

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 212039 1881.95 556 545 112.4
A 13 6 16888 145.43 556 545 112.4
A 13 254 7836 64.88 556 545 112.4
B 12 243 683776 182527.51 10 10 3.7
B 12 144 12478 3328.26 10 10 3.7
B 0 213 5407 1440.7 10 10 3.7
C 14 254 235747 1845.31 547 551 127.5
C 15 214 208405 1630.79 547 551 127.5
C 0 10 203320 1590.9 547 551 127.5
D 12 17 1423800 11278.62 520 505 126.2
D 12 217 506159 4006.96 520 505 126.2
D 13 249 264735 2093.84 520 505 126.2

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