ASTROSAT CZTI

Data Quality Report

Orbit 08639

Creation date: 2024-06-27T15:35:18.439690
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/AS1G07_024T01_9000001206_08639cztM0_level2.evt modeM0/AS1G07_024T01_9000001206_08639cztM0_level2_quad_clean.evt
Size (bytes)411,050,880121,415,040
Size392.0 MB 115.8 MB
Events in quadrant A2,847,679803,104
Events in quadrant B3,031,246836,109
Events in quadrant C2,862,529826,711
Events in quadrant D3,287,118780,314

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128273
B0132982
C0127462
D0142012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6176180.291451%
B6176190.307642%
C6176110.178109%
D6176761.230570%

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 7436 6177 10 10 0.13% 0.16%
B 7436 6177 8 8 0.11% 0.13%
C 7436 6177 0 0 0.00% 0.00%
D 7436 6177 61 61 0.82% 0.99%

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 13 248 32785 220.16 722 705 145.7
A 5 16 29372 196.74 722 705 145.7
A 0 226 6914 42.61 722 705 145.7
B 0 168 61052 437.91 740 722 137.8
B 0 219 26149 184.56 740 722 137.8
B 4 80 24117 169.81 740 722 137.8
C 8 208 38413 229.67 722 726 164.1
C 13 61 5582 29.59 722 726 164.1
C 8 222 2487 10.73 722 726 164.1
D 2 16 112629 647.02 713 691 173.0
D 9 64 98023 562.6 713 691 173.0
D 7 71 92368 529.91 713 691 173.0

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