ASTROSAT CZTI

Data Quality Report

Orbit 03780

Creation date: 2024-06-27T14:33:35.052516
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/AS1G05_248T01_9000000486_03780cztM0_level2.evt modeM0/AS1G05_248T01_9000000486_03780cztM0_level2_quad_clean.evt
Size (bytes)594,129,60089,507,520
Size566.6 MB 85.4 MB
Events in quadrant A3,870,826562,309
Events in quadrant B4,353,168569,273
Events in quadrant C3,508,478557,088
Events in quadrant D5,777,467524,867

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162723
B0175822
C0152092
D0220462

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71382473.460353%
B71381361.905296%
C71381011.414962%
D71383224.511068%

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 7948 7139 104 104 1.31% 1.46%
B 7948 7140 8 8 0.10% 0.11%
C 7948 7139 22 22 0.28% 0.31%
D 7948 7139 204 204 2.57% 2.86%

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 0 118 280743 1632.5 832 811 171.5
A 13 251 205728 1195.03 832 811 171.5
A 0 50 108112 625.75 832 811 171.5
B 0 173 821556 5021.64 844 823 163.4
B 15 204 114153 693.4 844 823 163.4
B 14 167 33727 201.32 844 823 163.4
C 2 53 313060 1644.87 810 811 189.8
C 12 4 12207 60.03 810 811 189.8
C 10 65 8869 42.45 810 811 189.8
D 1 84 1778299 9275.7 802 779 191.6
D 8 112 688218 3587.29 802 779 191.6
D 13 249 52666 270.76 802 779 191.6

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
Veto Counter