ASTROSAT CZTI

Data Quality Report

Orbit 37119

Creation date: 2024-06-27T21:35:48.328572
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/AS1A09_138T04_9000005282_37119cztM0_level2.evt modeM0/AS1A09_138T04_9000005282_37119cztM0_level2_quad_clean.evt
Size (bytes)407,427,84072,627,840
Size388.6 MB 69.3 MB
Events in quadrant A2,809,704468,365
Events in quadrant B3,093,811458,236
Events in quadrant C2,904,249450,105
Events in quadrant D3,152,482432,865

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118553
B0127942
C0119562
D0132162

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5567210.377223%
B55671342.407041%
C5567641.149632%
D5567991.778337%

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 7120 5568 13 13 0.18% 0.23%
B 7120 5568 108 108 1.52% 1.94%
C 7120 5568 51 51 0.72% 0.92%
D 7120 5568 104 104 1.46% 1.87%

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 274525 2123.63 639 626 129.0
A 9 143 53201 407.63 639 626 129.0
A 13 254 8403 60.3 639 626 129.0
B 5 172 460779 3746.84 631 613 122.8
B 0 182 36770 294.4 631 613 122.8
B 5 255 26206 208.39 631 613 122.8
C 15 214 237017 1630.25 616 620 145.0
C 0 10 186054 1278.8 616 620 145.0
C 15 159 31601 213.65 616 620 145.0
D 12 17 280919 1841.31 618 602 152.2
D 13 249 126767 828.73 618 602 152.2
D 12 233 120984 790.75 618 602 152.2

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