ASTROSAT CZTI

Data Quality Report

Orbit 14868

Creation date: 2024-06-27T17:00:44.885091
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/AS1G08_044T01_9000002196_14868cztM0_level2.evt modeM0/AS1G08_044T01_9000002196_14868cztM0_level2_quad_clean.evt
Size (bytes)224,412,48028,543,680
Size214.0 MB 27.2 MB
Events in quadrant A1,515,344169,855
Events in quadrant B1,549,100169,239
Events in quadrant C1,491,950162,907
Events in quadrant D2,047,166160,934

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A061212
B062151
C059731
D082541

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2809572.029192%
B2809943.346387%
C2809501.779993%
D28091987.048772%

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 3530 2811 0 0 0.00% 0.00%
B 3530 2811 5 5 0.14% 0.18%
C 3530 2811 0 0 0.00% 0.00%
D 3530 2811 117 117 3.31% 4.16%

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 12 189 56273 722.36 373 366 77.4
A 15 239 22454 285.4 373 366 77.4
A 0 226 3319 38.16 373 366 77.4
B 0 219 49326 667.57 366 357 73.4
B 3 64 28200 379.57 366 357 73.4
B 5 236 14712 195.69 366 357 73.4
C 3 233 108653 1301.36 353 354 83.2
C 6 96 2852 30.02 353 354 83.2
C 13 61 2542 26.29 353 354 83.2
D 13 104 426352 5054.56 344 335 84.3
D 7 254 315751 3742.32 344 335 84.3
D 2 234 10052 115.29 344 335 84.3

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