ASTROSAT CZTI

Data Quality Report

Orbit 38809

Creation date: 2024-06-27T21:56:44.028581
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/AS1A12_061T07_9000005402_38809cztM0_level2.fits modeM0/AS1A12_061T07_9000005402_38809cztM0_level2_quad_clean.evt
Size (bytes)364,921,92095,613,120
Size348.0 MB 91.2 MB
Events in quadrant A3,064,048656,805
Events in quadrant B2,731,327684,802
Events in quadrant C2,663,385638,918
Events in quadrant D4,645,162551,100

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122743
B0113002
C0108432
D0175092

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5196140.269438%
B5196270.519630%
C519690.173210%
D51963466.658968%

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 7259 5197 8 8 0.11% 0.15%
B 7259 5197 17 17 0.23% 0.33%
C 7259 5197 4 4 0.06% 0.08%
D 7259 5197 303 303 4.17% 5.83%

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 385811 3164.87 604 593 121.7
A 12 16 255557 2094.73 604 593 121.7
A 12 194 40920 331.32 604 593 121.7
B 5 200 146876 1261.38 610 595 116.0
B 5 184 92371 791.38 610 595 116.0
B 0 230 56502 482.08 610 595 116.0
C 15 214 230762 1649.82 599 604 139.5
C 0 239 58920 418.02 599 604 139.5
C 0 10 26032 182.27 599 604 139.5
D 2 16 734648 5246.19 575 560 139.9
D 12 235 625779 4468.15 575 560 139.9
D 12 227 493200 3520.67 575 560 139.9

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