ASTROSAT CZTI

Data Quality Report

Orbit 37159

Creation date: 2024-06-27T21:36:20.700446
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/AS1A11_079T01_9000005284_37159cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37159cztM0_level2_quad_clean.evt
Size (bytes)424,774,080100,920,960
Size405.1 MB 96.2 MB
Events in quadrant A2,988,803689,638
Events in quadrant B2,969,557688,114
Events in quadrant C3,068,202674,572
Events in quadrant D3,477,026632,221

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120383
B0119992
C0121152
D0135902

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5313120.225861%
B5313621.166949%
C5313510.959910%
D53131332.503294%

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 9469 5315 5 5 0.05% 0.09%
B 9469 5315 42 42 0.44% 0.79%
C 9469 5315 42 42 0.44% 0.79%
D 9469 5315 111 111 1.17% 2.09%

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 257468 1874.92 692 681 137.0
A 15 237 41322 296.74 692 681 137.0
A 13 254 7544 50.11 692 681 137.0
B 0 190 133101 1039.26 672 658 127.4
B 5 172 102606 799.97 672 658 127.4
B 5 200 73340 570.32 672 658 127.4
C 15 214 229181 1498.28 659 667 152.5
C 0 10 179223 1170.72 659 667 152.5
C 14 254 73102 474.93 659 667 152.5
D 2 249 362545 2269.51 662 647 159.5
D 13 249 171137 1069.17 662 647 159.5
D 12 233 70193 436.13 662 647 159.5

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