ASTROSAT CZTI

Data Quality Report

Orbit 49761

Creation date: 2024-12-10T05:07:03.068201
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_037T01_9000006440_49761cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49761cztM0_level2_quad_clean.evt
Size (bytes)2,994,799,68094,541,760
Size2.8 GB 90.2 MB
Events in quadrant A42,331,37038,150
Events in quadrant B11,758,9501,641,826
Events in quadrant C16,475,4141,677
Events in quadrant D38,984,48414,359

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03400
B03400
C03400
D03400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01372671
B0464971
C0610488
D01273311

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A169021663998.443971%
B169025743.396048%
C169001689099.940828%
D169021677999.272275%

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 17311 16901 16290 16290 94.10% 96.38%
B 17312 16904 418 418 2.41% 2.47%
C 17311 16899 1012 1012 5.85% 5.99%
D 17312 16901 13833 13833 79.90% 81.85%

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 99 10868724 58379.46 593 572 186.2
A 10 83 9578498 51448.87 593 572 186.2
A 12 50 5462499 29339.33 593 572 186.2
B 1 207 1056583 2788.84 1767 1709 378.2
B 4 21 696270 1836.26 1767 1709 378.2
B 1 255 379080 997.68 1767 1709 378.2
C 15 190 3549179 56888.12 68 60 62.4
C 15 180 2904060 46547.63 68 60 62.4
C 15 163 921549 14770.36 68 60 62.4
D 7 61 6111978 28699.77 427 395 212.9
D 15 106 3301954 15504.0 427 395 212.9
D 15 168 3226768 15150.93 427 395 212.9

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