ASTROSAT CZTI

Data Quality Report

Orbit 18150

Creation date: 2024-06-27T17:45:44.979477
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/AS1A05_082T08_9000002698_18150cztM0_level2.evt modeM0/AS1A05_082T08_9000002698_18150cztM0_level2_quad_clean.evt
Size (bytes)260,409,60031,749,120
Size248.3 MB 30.3 MB
Events in quadrant A1,780,798184,478
Events in quadrant B1,792,506186,596
Events in quadrant C1,743,631176,450
Events in quadrant D2,338,255173,288

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A071410
B071430
C069830
D089570

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A338140.118308%
B338290.266115%
C3382100.295683%
D33821444.257836%

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 3381 3381 2 2 0.06% 0.06%
B 3382 3382 5 5 0.15% 0.15%
C 3382 3382 0 0 0.00% 0.00%
D 3382 3382 108 108 3.19% 3.19%

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 4 2 29224 315.52 451 442 91.2
A 15 174 17002 181.54 451 442 91.2
A 0 226 3973 38.71 451 442 91.2
B 7 220 53450 637.1 439 431 83.2
B 0 229 14748 172.04 439 431 83.2
B 12 111 9083 103.97 439 431 83.2
C 14 238 67478 682.77 422 426 98.2
C 3 233 24914 249.35 422 426 98.2
C 13 61 2957 25.77 422 426 98.2
D 13 187 340887 3259.57 429 418 104.5
D 12 110 133690 1275.91 429 418 104.5
D 11 176 60502 575.23 429 418 104.5

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