ASTROSAT CZTI

Data Quality Report

Orbit 22435

Creation date: 2024-06-27T18:41:20.802037
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/AS1T03_159T01_9000003328_22435cztM0_level2.evt modeM0/AS1T03_159T01_9000003328_22435cztM0_level2_quad_clean.evt
Size (bytes)460,296,000120,991,680
Size439.0 MB 115.4 MB
Events in quadrant A3,365,952813,460
Events in quadrant B3,459,663849,293
Events in quadrant C3,394,997786,680
Events in quadrant D3,274,481758,447

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142132
B0144012
C0141212
D0140212

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6545701.069519%
B6546921.405438%
C65461131.726245%
D6546320.488848%

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 9160 6547 0 0 0.00% 0.00%
B 9161 6547 1 1 0.01% 0.02%
C 9161 6548 0 0 0.00% 0.00%
D 9161 6548 8 8 0.09% 0.12%

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 3 1 27753 156.59 864 848 171.8
A 15 174 11605 62.61 864 848 171.8
A 13 254 8519 44.65 864 848 171.8
B 12 111 19207 114.13 875 855 160.8
B 0 229 18187 107.79 875 855 160.8
B 11 111 16737 98.77 875 855 160.8
C 14 238 133403 688.12 833 840 192.6
C 0 10 15872 78.03 833 840 192.6
C 13 61 5798 25.74 833 840 192.6
D 13 104 50696 251.51 829 808 198.4
D 1 52 33841 166.54 829 808 198.4
D 7 96 29397 144.13 829 808 198.4

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