ASTROSAT CZTI

Data Quality Report

Orbit 48271

Creation date: 2024-09-06T12:46:51.069685
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_029T01_9000006422_48271cztM0_level2.fits modeM0/AS1A13_029T01_9000006422_48271cztM0_level2_quad_clean.evt
Size (bytes)2,718,210,240518,400,000
Size2.5 GB 494.4 MB
Events in quadrant A33,435,3883,505,698
Events in quadrant B16,931,8733,659,853
Events in quadrant C15,580,9563,511,008
Events in quadrant D32,101,7962,728,779

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01235557
B0729947
C0702117
D01182987

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06800
B06800
C06800
D06800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3331810053.016388%
B333195401.620697%
C333193020.906390%
D33319586717.608572%

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 37803 33325 79 79 0.21% 0.24%
B 37804 33323 127 127 0.34% 0.38%
C 37804 33324 79 79 0.21% 0.24%
D 37804 33323 5437 5437 14.38% 16.32%

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 10 83 18920422 24277.62 3744 3658 779.2
A 13 254 68355 83.03 3744 3658 779.2
A 3 137 43941 51.7 3744 3658 779.2
B 4 21 1292466 1758.19 3740 3616 733.1
B 5 255 343524 463.69 3740 3616 733.1
B 5 207 142089 188.9 3740 3616 733.1
C 14 254 639719 732.82 3706 3729 867.9
C 12 2 403395 460.52 3706 3729 867.9
C 3 233 49795 53.08 3706 3729 867.9
D 2 165 9344625 10853.09 3433 3326 860.7
D 12 3 6088359 7069.83 3433 3326 860.7
D 2 249 1604786 1860.64 3433 3326 860.7

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