ASTROSAT CZTI

Data Quality Report

Orbit 34796

Creation date: 2022-03-06T04:17:46.227464
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/AS1C07_004T01_9000004990_34796cztM0_level2.evt modeM0/AS1C07_004T01_9000004990_34796cztM0_level2_quad_clean.evt
Size (bytes)440,942,40064,958,400
Size420.5 MB 61.9 MB
Events in quadrant A2,509,299409,385
Events in quadrant B2,905,975419,277
Events in quadrant C2,890,424409,368
Events in quadrant D4,694,096363,109

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107893
B0118712
C0115522
D0176672

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A521970.134125%
B5219631.207128%
C5219881.686147%
D52193466.629623%

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 7072 5220 0 0 0.00% 0.00%
B 7072 5220 36 36 0.51% 0.69%
C 7072 5220 72 72 1.02% 1.38%
D 7072 5220 334 334 4.72% 6.40%

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 49218 392.45 621 612 123.9
A 7 16 42885 341.31 621 612 123.9
A 13 6 9714 73.49 621 612 123.9
B 5 172 142617 1187.26 623 606 119.6
B 5 255 90850 754.47 623 606 119.6
B 4 232 80978 671.93 623 606 119.6
C 0 10 248955 1757.47 606 612 141.3
C 15 214 222857 1572.78 606 612 141.3
C 14 67 41221 287.38 606 612 141.3
D 8 195 1135238 7883.44 585 570 143.9
D 1 52 507333 3520.88 585 570 143.9
D 12 6 246532 1708.89 585 570 143.9

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