ASTROSAT CZTI

Data Quality Report

Orbit 46654

Creation date: 2024-06-27T23:25:59.070319
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_039T01_9000006246_46654cztM0_level2.fits modeM0/AS1A13_039T01_9000006246_46654cztM0_level2_quad_clean.evt
Size (bytes)558,872,640117,645,120
Size533.0 MB 112.2 MB
Events in quadrant A6,684,815784,132
Events in quadrant B3,668,600805,732
Events in quadrant C3,221,818772,268
Events in quadrant D6,533,226679,437

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0245620
B0160190
C0153410
D0245640

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7475971.297659%
B7476560.749064%
C747640.053505%
D74764956.621188%

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 7475 7475 4 4 0.05% 0.05%
B 7476 7476 12 12 0.16% 0.16%
C 7476 7476 1 1 0.01% 0.01%
D 7476 7476 420 420 5.62% 5.62%

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 3507996 20835.83 802 785 168.3
A 7 3 16472 93.19 802 785 168.3
A 0 243 13512 75.61 802 785 168.3
B 0 198 152992 965.2 798 771 157.7
B 5 32 73747 462.72 798 771 157.7
B 0 189 63678 398.88 798 771 157.7
C 8 131 80037 431.18 783 786 183.8
C 12 250 22755 119.53 783 786 183.8
C 3 233 20008 104.58 783 786 183.8
D 12 128 1678263 8686.54 770 745 193.1
D 1 52 878742 4546.45 770 745 193.1
D 13 249 582167 3010.73 770 745 193.1

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