ASTROSAT CZTI

Data Quality Report

Orbit 37127

Creation date: 2024-06-27T21:35:55.189847
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_079T01_9000005284_37127cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37127cztM0_level2_quad_clean.evt
Size (bytes)457,018,56066,458,880
Size435.8 MB 63.4 MB
Events in quadrant A2,889,994414,355
Events in quadrant B3,469,809408,812
Events in quadrant C3,090,984410,565
Events in quadrant D4,011,261388,324

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118883
B0139012
C0123622
D0154612

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A558290.161233%
B55821793.206736%
C5582841.504837%
D55823626.485131%

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 9078 5584 3 3 0.03% 0.05%
B 9078 5584 123 123 1.35% 2.20%
C 9078 5584 72 72 0.79% 1.29%
D 9078 5584 368 368 4.05% 6.59%

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 264244 1954.86 674 661 134.8
A 13 6 9138 62.87 674 661 134.8
A 13 254 8491 58.07 674 661 134.8
B 5 172 538127 4242.72 660 644 126.7
B 5 184 316545 2493.62 660 644 126.7
B 12 111 15588 117.96 660 644 126.7
C 15 214 241582 1597.91 647 654 150.8
C 0 10 167647 1107.55 647 654 150.8
C 14 254 157452 1039.94 647 654 150.8
D 12 17 846368 5452.86 637 619 155.1
D 13 249 231414 1488.02 637 619 155.1
D 2 250 87226 558.39 637 619 155.1

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