ASTROSAT CZTI

Data Quality Report

Orbit 34128

Creation date: 2024-06-27T20:56:47.935227
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_097T08_9000004874_34128cztM0_level2.evt modeM0/AS1A11_097T08_9000004874_34128cztM0_level2_quad_clean.evt
Size (bytes)492,644,16088,248,960
Size469.8 MB 84.2 MB
Events in quadrant A2,707,080577,112
Events in quadrant B3,031,031587,116
Events in quadrant C3,873,371568,786
Events in quadrant D4,910,757529,755

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118993
B0128322
C0152332
D0185432

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A585760.102442%
B5857190.324398%
C58571472.509817%
D58574758.109954%

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 9113 5859 0 0 0.00% 0.00%
B 9113 5859 8 8 0.09% 0.14%
C 9113 5859 99 99 1.09% 1.69%
D 9113 5859 452 452 4.96% 7.71%

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 21081 145.7 690 677 140.0
A 13 6 15770 107.78 690 677 140.0
A 13 254 10436 69.69 690 677 140.0
B 5 172 71088 529.96 690 673 132.9
B 0 189 60911 453.36 690 673 132.9
B 0 229 45113 334.47 690 673 132.9
C 0 10 995598 6463.69 665 673 153.9
C 15 214 250671 1624.15 665 673 153.9
C 12 250 7749 45.97 665 673 153.9
D 10 118 852725 4798.72 651 637 177.6
D 8 195 551102 3100.07 651 637 177.6
D 14 52 331856 1865.33 651 637 177.6

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