ASTROSAT CZTI

Data Quality Report

Orbit 20240415_A13_065T03_9000006186_level2

Creation date: 2024-04-17T12:30:19.097835
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_065T03_9000006186cztM0_level2.fits modeM0/AS1A13_065T03_9000006186cztM0_level2_quad_clean.evt
Size (bytes)230,169,600201,211,200
Size219.5 MB 191.9 MB
Events in quadrant A1,361,8541,147,815
Events in quadrant B1,330,9081,162,565
Events in quadrant C1,385,5481,089,729
Events in quadrant D1,193,806994,579

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04980
B04980
C04980
D04980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0881220
B0648550
C0543730
D0589860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2469310224.138825%
B246947783.150563%
C246914501.822526%
D246958273.348856%

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 51547 24691 0 0 0.00% 0.00%
B 51547 24689 0 0 0.00% 0.00%
C 51548 24691 0 0 0.00% 0.00%
D 51548 24688 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 7 110 1141 8.99 355 333 89.9
A 0 29 1083 8.34 355 333 89.9
A 15 236 1060 8.09 355 333 89.9
B 2 9 1249 13.11 351 335 69.7
B 2 8 969 9.09 351 335 69.7
B 3 17 943 8.72 351 335 69.7
C 3 202 1054 7.44 366 340 95.9
C 1 81 1048 7.37 366 340 95.9
C 1 80 1028 7.17 366 340 95.9
D 6 38 872 5.87 342 310 95.7
D 7 3 860 5.74 342 310 95.7
D 10 113 856 5.7 342 310 95.7

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