ASTROSAT CZTI

Data Quality Report

Orbit 41830

Creation date: 2024-06-27T22:33:21.615207
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_099T04_9000005708_41830cztM0_level2.fits modeM0/AS1A12_099T04_9000005708_41830cztM0_level2_quad_clean.evt
Size (bytes)400,579,20097,663,680
Size382.0 MB 93.1 MB
Events in quadrant A3,160,297661,105
Events in quadrant B2,729,225677,017
Events in quadrant C3,317,670628,360
Events in quadrant D5,152,498569,468

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129951
B0122441
C0135011
D0194761

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6024260.431607%
B6024120.199203%
C60241212.008632%
D60243465.743692%

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 7366 6025 10 10 0.14% 0.17%
B 7366 6025 3 3 0.04% 0.05%
C 7366 6025 119 119 1.62% 1.98%
D 7366 6025 328 328 4.45% 5.44%

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 490683 3530.71 673 658 138.8
A 2 79 45678 324.38 673 658 138.8
A 14 235 11927 81.2 673 658 138.8
B 0 245 33794 252.6 666 647 131.2
B 15 35 33030 246.78 666 647 131.2
B 0 183 26453 196.66 666 647 131.2
C 0 10 545528 3590.34 648 650 151.8
C 15 214 234154 1538.62 648 650 151.8
C 0 207 10614 65.66 648 650 151.8
D 5 222 1609310 10301.49 641 621 156.2
D 13 249 440413 2816.28 641 621 156.2
D 12 6 364822 2332.22 641 621 156.2

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