ASTROSAT CZTI

Data Quality Report

Orbit 28488

Creation date: 2024-06-27T19:52:20.343324
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/AS1A10_110T04_9000004094_28488cztM0_level2.evt modeM0/AS1A10_110T04_9000004094_28488cztM0_level2_quad_clean.evt
Size (bytes)572,028,48099,158,400
Size545.5 MB 94.6 MB
Events in quadrant A3,108,007662,497
Events in quadrant B4,272,479671,347
Events in quadrant C3,274,157659,370
Events in quadrant D6,260,290588,154

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130001
B0166301
C0135501
D0227063

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6035460.762220%
B60354928.152444%
C60361322.186879%
D6035105817.531069%

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 7295 6036 0 0 0.00% 0.00%
B 7295 6035 278 278 3.81% 4.61%
C 7296 6036 2 2 0.03% 0.03%
D 7295 6035 884 884 12.12% 14.65%

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 15 174 12008 70.49 799 783 159.3
A 13 254 10457 60.75 799 783 159.3
A 1 113 8107 45.99 799 783 159.3
B 10 245 1150524 7833.17 781 764 146.8
B 0 230 31792 211.39 781 764 146.8
B 12 111 17613 114.79 781 764 146.8
C 14 238 126234 688.41 786 792 182.2
C 7 247 42805 230.56 786 792 182.2
C 3 233 26649 141.9 786 792 182.2
D 1 52 2227861 12942.74 720 703 172.1
D 8 195 1049359 6094.08 720 703 172.1
D 12 233 143675 830.85 720 703 172.1

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