ASTROSAT CZTI

Data Quality Report

Orbit 40501

Creation date: 2024-06-27T22:16:51.728519
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/AS1A12_022T01_9000005540_40501cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40501cztM0_level2_quad_clean.evt
Size (bytes)316,704,96090,558,720
Size302.0 MB 86.4 MB
Events in quadrant A2,866,298614,005
Events in quadrant B2,530,469630,662
Events in quadrant C2,694,720600,298
Events in quadrant D3,195,614505,824

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118913
B0114762
C0117462
D0134822

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5591110.196745%
B5591130.232517%
C5591220.393490%
D559158610.481130%

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 7385 5592 4 4 0.05% 0.07%
B 7385 5592 5 5 0.07% 0.09%
C 7385 5592 15 15 0.20% 0.27%
D 7385 5592 132 132 1.79% 2.36%

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 512776 4186.17 600 590 122.4
A 12 189 12974 101.22 600 590 122.4
A 2 79 7550 56.89 600 590 122.4
B 3 112 60151 518.39 595 578 114.9
B 4 170 44480 382.02 595 578 114.9
B 4 171 40655 348.74 595 578 114.9
C 15 214 245164 1819.61 580 583 134.4
C 14 254 144342 1069.53 580 583 134.4
C 9 146 13964 99.55 580 583 134.4
D 12 0 321964 2369.34 552 536 135.7
D 12 227 238110 1751.23 552 536 135.7
D 2 250 207735 1527.32 552 536 135.7

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