ASTROSAT CZTI

Data Quality Report

Orbit 18319

Creation date: 2024-06-27T17:48:17.791638
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/AS1A06_006T01_9000002720_18319cztM0_level2.evt modeM0/AS1A06_006T01_9000002720_18319cztM0_level2_quad_clean.evt
Size (bytes)475,125,12090,241,920
Size453.1 MB 86.1 MB
Events in quadrant A3,091,839577,573
Events in quadrant B3,361,506581,931
Events in quadrant C3,121,428564,783
Events in quadrant D4,359,881541,927

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136183
B0142972
C0136042
D0174922

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6698240.358316%
B6698691.030158%
C6698530.791281%
D66981932.881457%

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 7583 6700 0 0 0.00% 0.00%
B 7583 6700 9 9 0.12% 0.13%
C 7583 6700 0 0 0.00% 0.00%
D 7583 6700 167 167 2.20% 2.49%

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 15 174 13820 80.26 800 782 162.4
A 0 226 7043 38.54 800 782 162.4
A 3 137 5857 31.24 800 782 162.4
B 7 220 110609 706.77 805 784 155.4
B 0 197 48185 305.04 805 784 155.4
B 12 111 17375 106.77 805 784 155.4
C 14 238 117788 644.77 767 772 181.5
C 0 207 7834 38.91 767 772 181.5
C 13 61 5529 26.21 767 772 181.5
D 7 238 1038772 5521.06 768 746 188.0
D 2 69 148689 786.88 768 746 188.0
D 13 168 49661 260.17 768 746 188.0

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