ASTROSAT CZTI

Data Quality Report

Orbit 20190

Creation date: 2024-06-27T18:12:14.040650
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/AS1C04_001T01_9000002994_20190cztM0_level2.evt modeM0/AS1C04_001T01_9000002994_20190cztM0_level2_quad_clean.evt
Size (bytes)431,686,080133,107,840
Size411.7 MB 126.9 MB
Events in quadrant A3,128,270917,915
Events in quadrant B3,214,145923,570
Events in quadrant C3,117,835876,542
Events in quadrant D3,177,499866,579

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133132
B0136012
C0132622
D0137542

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6405250.390320%
B6405450.702576%
C6405560.874317%
D6405540.843091%

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 7675 6406 0 0 0.00% 0.00%
B 7675 6406 0 0 0.00% 0.00%
C 7675 6406 0 0 0.00% 0.00%
D 7675 6406 38 38 0.50% 0.59%

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 16 11895 69.08 805 791 160.7
A 4 2 9395 53.53 805 791 160.7
A 12 194 7882 44.11 805 791 160.7
B 0 197 20269 130.22 800 781 149.7
B 4 171 18608 119.12 800 781 149.7
B 7 220 18204 116.42 800 781 149.7
C 14 238 121214 685.99 760 763 175.6
C 3 233 30371 168.62 760 763 175.6
C 13 61 5263 25.63 760 763 175.6
D 7 96 112623 603.84 770 748 185.3
D 2 120 36392 192.39 770 748 185.3
D 2 234 25606 134.17 770 748 185.3

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