ASTROSAT CZTI

Data Quality Report

Orbit 20231114_A13_065T02_9000005922_level2

Creation date: 2023-11-16T11:31:05.685933
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/AS1A13_065T02_9000005922cztM0_level2.fits modeM0/AS1A13_065T02_9000005922cztM0_level2_quad_clean.evt
Size (bytes)169,191,360163,739,520
Size161.4 MB 156.2 MB
Events in quadrant A784,936675,898
Events in quadrant B1,019,3081,031,596
Events in quadrant C1,050,6161,005,408
Events in quadrant D840,414821,715

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04160
B04160
C04160
D04160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01096660
B0481390
C0470060
D0741040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A20671900643.568284%
B206716092.946156%
C206713581.731895%
D20671277813.439118%

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 22391 19817 0 0 0.00% 0.00%
B 22391 20665 0 0 0.00% 0.00%
C 22392 20667 0 0 0.00% 0.00%
D 22392 20616 0 0 0.00% 0.00%

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 0 29 669 8.86 205 192 53.9
A 7 110 658 8.65 205 192 53.9
A 0 30 629 8.11 205 192 53.9
B 2 9 927 12.02 269 255 55.9
B 3 17 801 9.77 269 255 55.9
B 5 232 706 8.07 269 255 55.9
C 1 81 836 7.76 278 258 74.5
C 3 202 834 7.73 278 258 74.5
C 1 80 788 7.11 278 258 74.5
D 6 67 616 5.75 242 219 69.0
D 3 14 613 5.71 242 219 69.0
D 10 113 606 5.61 242 219 69.0

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