ASTROSAT CZTI

Data Quality Report

Orbit 48270

Creation date: 2024-09-06T08:28:08.451420
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_48270cztM0_level2.fits modeM0/AS1A13_029T01_9000006422_48270cztM0_level2_quad_clean.evt
Size (bytes)446,909,76096,373,440
Size426.2 MB 91.9 MB
Events in quadrant A6,039,450642,848
Events in quadrant B2,953,136672,204
Events in quadrant C2,754,390642,009
Events in quadrant D4,327,836539,583

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224601
B0128521
C0125311
D0170001

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60301632.703151%
B6031641.061184%
C6031410.679821%
D60315849.683303%

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 7060 6031 18 18 0.25% 0.30%
B 7061 6032 1 1 0.01% 0.02%
C 7061 6032 5 5 0.07% 0.08%
D 7061 6032 425 425 6.02% 7.05%

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 3419194 24049.58 676 662 142.1
A 13 254 12105 80.5 676 662 142.1
A 3 137 7748 49.85 676 662 142.1
B 4 21 210057 1553.16 675 654 134.8
B 5 207 35955 261.83 675 654 134.8
B 12 111 17059 121.68 675 654 134.8
C 14 254 86296 540.61 668 672 158.4
C 12 2 44768 278.41 668 672 158.4
C 0 207 10377 61.27 668 672 158.4
D 12 3 1468407 9132.46 638 617 160.7
D 7 204 135097 836.72 638 617 160.7
D 2 249 90865 561.52 638 617 160.7

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