ASTROSAT CZTI

Data Quality Report

Orbit 12492

Creation date: 2024-06-27T16:28:09.496731
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_174T01_9000001850_12492cztM0_level2.evt modeM0/AS1A04_174T01_9000001850_12492cztM0_level2_quad_clean.evt
Size (bytes)485,130,24086,181,120
Size462.7 MB 82.2 MB
Events in quadrant A3,611,864553,925
Events in quadrant B3,486,573568,786
Events in quadrant C3,048,030555,749
Events in quadrant D4,131,679505,054

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147553
B0142202
C0128812
D0162902

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6104480.786370%
B6104941.539974%
C6104150.245740%
D61042163.538663%

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 7420 6106 0 0 0.00% 0.00%
B 7420 6106 24 24 0.32% 0.39%
C 7420 6106 4 4 0.05% 0.07%
D 7420 6106 188 188 2.53% 3.08%

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 12 189 234679 1490.68 774 760 156.9
A 1 162 135672 859.74 774 760 156.9
A 1 178 83214 525.45 774 760 156.9
B 4 239 152836 1038.71 785 767 146.4
B 11 51 70273 474.76 785 767 146.4
B 0 219 64421 434.79 785 767 146.4
C 15 208 82401 466.98 759 769 174.8
C 13 61 5568 27.45 759 769 174.8
C 3 233 4003 18.5 759 769 174.8
D 1 52 690971 3888.12 733 716 177.5
D 7 80 411864 2315.95 733 716 177.5
D 8 195 104908 586.9 733 716 177.5

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