ASTROSAT CZTI

Data Quality Report

Orbit 12949

Creation date: 2024-06-27T16:34:15.335625
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/AS1A04_115T02_9000001900_12949cztM0_level2.evt modeM0/AS1A04_115T02_9000001900_12949cztM0_level2_quad_clean.evt
Size (bytes)1,652,132,160206,308,800
Size1.5 GB 196.8 MB
Events in quadrant A9,567,8121,305,174
Events in quadrant B15,109,6901,126,517
Events in quadrant C8,462,0321,323,530
Events in quadrant D15,642,9631,212,220

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03780
B03780
C03780
D03780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0406455
B0573055
C0379575
D0592305

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A185681660.894011%
B18568308516.614606%
C18568730.393150%
D18568198910.711978%

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 20639 18574 1 1 0.00% 0.01%
B 20639 18572 1728 1728 8.37% 9.30%
C 20639 18574 4 4 0.02% 0.02%
D 20639 18574 1748 1748 8.47% 9.41%

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 1 162 265397 582.47 2229 2175 451.9
A 15 239 253640 556.45 2229 2175 451.9
A 1 178 125150 272.12 2229 2175 451.9
B 4 239 6278189 16277.34 2009 1953 385.6
B 3 64 739506 1912.83 2009 1953 385.6
B 0 214 61759 155.1 2009 1953 385.6
C 13 61 15705 27.1 2166 2178 499.2
C 14 234 13771 23.22 2166 2178 499.2
C 12 4 6742 9.14 2166 2178 499.2
D 1 52 7196644 14084.28 2104 2041 510.8
D 8 195 402608 784.16 2104 2041 510.8
D 2 234 69892 132.83 2104 2041 510.8

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