ASTROSAT CZTI

Data Quality Report

Orbit 09026

Creation date: 2024-06-27T15:40:13.970535
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_029T02_9000001256_09026cztM0_level2.evt modeM0/AS1G07_029T02_9000001256_09026cztM0_level2_quad_clean.evt
Size (bytes)557,942,40093,263,040
Size532.1 MB 88.9 MB
Events in quadrant A5,141,371578,274
Events in quadrant B3,717,610593,244
Events in quadrant C3,250,200583,249
Events in quadrant D4,293,990561,926

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0199243
B0159502
C0147992
D0178542

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72962693.686952%
B7296951.302083%
C7296220.301535%
D72961121.535088%

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 8981 7298 183 183 2.04% 2.51%
B 8981 7298 22 22 0.24% 0.30%
C 8981 7298 0 0 0.00% 0.00%
D 8981 7298 56 56 0.62% 0.77%

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 8 5 1708669 9722.07 847 828 175.7
A 1 162 81082 456.85 847 828 175.7
A 13 251 52611 294.78 847 828 175.7
B 4 48 184851 1111.4 858 836 165.6
B 6 51 124666 747.9 858 836 165.6
B 0 214 26802 156.83 858 836 165.6
C 13 61 6142 27.28 833 834 194.6
C 3 254 2218 7.11 833 834 194.6
C 3 202 2011 6.05 833 834 194.6
D 6 225 564625 2642.58 823 803 213.4
D 1 52 295703 1382.17 823 803 213.4
D 2 14 111835 520.4 823 803 213.4

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