ASTROSAT CZTI

Data Quality Report

Orbit 14382

Creation date: 2024-06-27T16:54:17.792722
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/AS1A04_149T01_9000002118_14382cztM0_level2.evt modeM0/AS1A04_149T01_9000002118_14382cztM0_level2_quad_clean.evt
Size (bytes)548,187,84095,489,280
Size522.8 MB 91.1 MB
Events in quadrant A3,067,693642,112
Events in quadrant B3,312,834645,562
Events in quadrant C3,923,395622,581
Events in quadrant D5,846,376516,958

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136103
B0142842
C0162682
D0220122

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6660270.405405%
B6660420.630631%
C6660170.255255%
D6660114817.237237%

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 8476 6662 3 3 0.04% 0.05%
B 8476 6663 4 4 0.05% 0.06%
C 8476 6663 2 2 0.02% 0.03%
D 8475 6662 1111 1111 13.11% 16.68%

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 8 15 38889 238.06 781 763 160.2
A 4 2 11625 67.82 781 763 160.2
A 0 226 6967 38.74 781 763 160.2
B 10 245 63478 415.09 784 763 151.1
B 0 229 45594 296.72 784 763 151.1
B 0 219 40559 263.4 784 763 151.1
C 3 233 973242 5599.42 750 754 173.7
C 3 232 7713 40.07 750 754 173.7
C 8 128 7317 37.79 750 754 173.7
D 1 52 2933714 16701.06 672 654 175.6
D 2 120 113164 640.64 672 654 175.6
D 12 110 95488 539.99 672 654 175.6

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