ASTROSAT CZTI

Data Quality Report

Orbit 32361

Creation date: 2024-06-27T20:39:20.451811
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/AS1A09_131T01_9000004702_32361cztM0_level2.evt modeM0/AS1A09_131T01_9000004702_32361cztM0_level2_quad_clean.evt
Size (bytes)586,085,760118,451,520
Size558.9 MB 113.0 MB
Events in quadrant A2,947,452816,384
Events in quadrant B5,529,455800,301
Events in quadrant C3,282,092785,926
Events in quadrant D5,565,630746,012

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127912
B0209491
C0134711
D0210301

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6284520.827498%
B62842544.042011%
C62841572.498409%
D62843405.410567%

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 7204 6285 0 0 0.00% 0.00%
B 7204 6285 111 111 1.54% 1.77%
C 7204 6285 18 18 0.25% 0.29%
D 7204 6285 296 296 4.11% 4.71%

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 13 6 12141 74.83 757 741 152.4
A 13 254 11545 70.92 757 741 152.4
A 15 174 8849 53.22 757 741 152.4
B 6 159 1729610 12194.21 737 717 141.8
B 5 172 428963 3020.5 737 717 141.8
B 0 190 326055 2294.67 737 717 141.8
C 14 238 134634 808.33 715 718 165.7
C 0 10 80994 484.56 715 718 165.7
C 0 207 76874 459.69 715 718 165.7
D 8 195 1199376 7001.76 720 700 171.2
D 12 6 462473 2697.33 720 700 171.2
D 14 52 360964 2104.39 720 700 171.2

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