ASTROSAT CZTI

Data Quality Report

Orbit 33871

Creation date: 2024-06-27T20:53:30.883771
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_046T03_9000004834_33871cztM0_level2.evt modeM0/AS1A11_046T03_9000004834_33871cztM0_level2_quad_clean.evt
Size (bytes)372,542,40042,742,080
Size355.3 MB 40.8 MB
Events in quadrant A1,866,730269,769
Events in quadrant B2,856,221262,039
Events in quadrant C2,360,229263,382
Events in quadrant D3,944,859233,897

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A075900
B0107450
C095190
D0143220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A374580.213618%
B37452957.877170%
C3745110.293725%
D37453749.986649%

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 3745 3745 0 0 0.00% 0.00%
B 3745 3745 195 195 5.21% 5.21%
C 3745 3745 7 7 0.19% 0.19%
D 3745 3745 321 321 8.57% 8.57%

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 13 6 12661 127.6 480 472 95.5
A 13 254 6243 60.41 480 472 95.5
A 3 137 4306 40.14 480 472 95.5
B 5 172 944858 10981.41 454 443 86.0
B 0 199 28720 328.8 454 443 86.0
B 0 229 19884 226.05 454 443 86.0
C 3 233 265431 2494.43 458 462 106.2
C 15 214 160453 1506.16 458 462 106.2
C 0 10 96506 904.16 458 462 106.2
D 8 195 861591 7871.54 450 439 109.4
D 12 235 655784 5990.32 450 439 109.4
D 1 47 213186 1944.66 450 439 109.4

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