ASTROSAT CZTI

Data Quality Report

Orbit 38169

Creation date: 2024-06-27T21:49:15.647472
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/AS1A07_145T01_9000005370_38169cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38169cztM0_level2_quad_clean.evt
Size (bytes)335,088,00093,579,840
Size319.6 MB 89.2 MB
Events in quadrant A2,842,128633,832
Events in quadrant B2,724,809644,360
Events in quadrant C2,678,789621,407
Events in quadrant D3,737,102555,535

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01189965
B01182454
C01121129
D014959213

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5403150.277624%
B5412380.702143%
C542280.147547%
D53782153.997769%

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 7174 5430 10 10 0.14% 0.18%
B 7174 5432 22 22 0.31% 0.41%
C 7174 5436 5 5 0.07% 0.09%
D 7174 5415 236 236 3.29% 4.36%

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 386363 3110.43 612 599 124.0
A 7 3 26596 209.61 612 599 124.0
A 9 143 18350 143.13 612 599 124.0
B 0 229 128858 1084.96 615 598 118.2
B 4 171 86279 724.78 615 598 118.2
B 5 172 35549 295.65 615 598 118.2
C 15 214 226392 1581.36 608 612 142.8
C 1 23 41448 286.01 608 612 142.8
C 0 10 18697 126.66 608 612 142.8
D 12 233 641698 4428.46 593 578 144.8
D 12 235 470667 3247.08 593 578 144.8
D 10 199 85201 584.52 593 578 144.8

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