ASTROSAT CZTI

Data Quality Report

Orbit 18276

Creation date: 2024-06-27T17:47:44.240102
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_18276cztM0_level2.evt modeM0/AS1A06_006T01_9000002720_18276cztM0_level2_quad_clean.evt
Size (bytes)546,935,04084,188,160
Size521.6 MB 80.3 MB
Events in quadrant A3,147,637532,485
Events in quadrant B3,466,585535,534
Events in quadrant C3,206,969518,118
Events in quadrant D6,282,524489,860

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138172
B0146922
C0138752
D0234452

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6790100.147275%
B6790410.603829%
C6791560.824621%
D67913304.859373%

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 8575 6792 0 0 0.00% 0.00%
B 8575 6792 4 4 0.05% 0.06%
C 8576 6793 6 6 0.07% 0.09%
D 8576 6793 443 443 5.17% 6.52%

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 26226 155.73 809 792 163.3
A 0 226 7000 38.01 809 792 163.3
A 3 137 6117 32.6 809 792 163.3
B 7 220 110908 701.18 816 796 157.0
B 4 171 102355 646.71 816 796 157.0
B 4 216 19221 117.33 816 796 157.0
C 14 238 119101 647.23 779 784 182.8
C 0 207 42082 225.91 779 784 182.8
C 3 233 6491 31.22 779 784 182.8
D 7 238 2706802 14113.86 777 754 191.7
D 1 52 337904 1758.46 777 754 191.7
D 13 168 231527 1203.64 777 754 191.7

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