ASTROSAT CZTI

Data Quality Report

Orbit 36722

Creation date: 2024-06-27T21:30:46.329196
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/AS1A11_101T01_9000005238_36722cztM0_level2.evt modeM0/AS1A11_101T01_9000005238_36722cztM0_level2_quad_clean.evt
Size (bytes)399,214,08081,650,880
Size380.7 MB 77.9 MB
Events in quadrant A2,518,102536,293
Events in quadrant B2,833,120549,156
Events in quadrant C3,657,535513,244
Events in quadrant D2,730,958512,685

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108793
B0117572
C0141342
D0117352

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5157130.252085%
B5157781.512507%
C51573456.689936%
D5157591.144076%

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 7010 5158 6 6 0.09% 0.12%
B 7010 5158 57 57 0.81% 1.11%
C 7010 5158 292 292 4.17% 5.66%
D 7010 5158 52 52 0.74% 1.01%

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 207582 1731.73 591 581 119.5
A 9 143 15995 128.95 591 581 119.5
A 13 254 8911 69.69 591 581 119.5
B 5 255 230461 2029.11 593 578 113.3
B 0 189 69533 608.64 593 578 113.3
B 4 171 44420 386.98 593 578 113.3
C 14 254 650339 4999.46 561 566 130.0
C 0 10 562550 4324.0 561 566 130.0
C 15 214 224984 1726.71 561 566 130.0
D 12 6 154936 1105.98 575 560 139.6
D 2 250 96831 689.71 575 560 139.6
D 2 153 81101 577.01 575 560 139.6

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