ASTROSAT CZTI

Data Quality Report

Orbit 32925

Creation date: 2024-06-27T20:43:31.847870
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_005T01_9000004748_32925cztM0_level2.evt modeM0/AS1C07_005T01_9000004748_32925cztM0_level2_quad_clean.evt
Size (bytes)1,685,427,840280,123,200
Size1.6 GB 267.1 MB
Events in quadrant A7,038,0011,929,408
Events in quadrant B10,523,4241,897,592
Events in quadrant C8,812,4191,912,529
Events in quadrant D23,624,4921,670,151

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0313644
B0415263
C0363963
D0811093

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15561170.109247%
B155618025.153910%
C155614382.814729%
D15561292118.771287%

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 19769 15564 2 2 0.01% 0.01%
B 19769 15564 489 489 2.47% 3.14%
C 19769 15564 360 360 1.82% 2.31%
D 19769 15564 3191 3191 16.14% 20.50%

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 11 29 71193 194.21 1787 1749 357.6
A 13 254 27909 73.16 1787 1749 357.6
A 13 6 22157 57.07 1787 1749 357.6
B 5 172 1930655 5841.11 1752 1706 330.2
B 0 199 722704 2183.28 1752 1706 330.2
B 0 219 271092 815.74 1752 1706 330.2
C 9 187 895107 2265.63 1714 1727 394.3
C 0 10 635572 1607.45 1714 1727 394.3
C 14 67 286177 721.37 1714 1727 394.3
D 8 195 11078413 26444.47 1628 1592 418.9
D 12 227 1899808 4531.74 1628 1592 418.9
D 7 80 1186234 2828.18 1628 1592 418.9

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