ASTROSAT CZTI

Data Quality Report

Orbit 12401

Creation date: 2024-06-27T16:26:43.726266
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/AS1G08_083T02_9000001840_12401cztM0_level2.evt modeM0/AS1G08_083T02_9000001840_12401cztM0_level2_quad_clean.evt
Size (bytes)521,700,48097,168,320
Size497.5 MB 92.7 MB
Events in quadrant A4,782,865614,471
Events in quadrant B3,863,456636,468
Events in quadrant C3,050,703630,439
Events in quadrant D3,647,038593,003

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189843
B0159522
C0137652
D0156182

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67222002.975305%
B67221562.320738%
C6722140.208271%
D6722841.249628%

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 8843 6725 31 31 0.35% 0.46%
B 8843 6724 85 85 0.96% 1.26%
C 8843 6725 0 0 0.00% 0.00%
D 8843 6725 76 76 0.86% 1.13%

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 13 251 666251 4099.73 795 776 162.3
A 1 162 324265 1992.89 795 776 162.3
A 1 178 191578 1175.46 795 776 162.3
B 4 239 535047 3480.67 806 785 153.5
B 0 230 74239 478.55 806 785 153.5
B 0 219 46789 299.71 806 785 153.5
C 13 61 5688 26.95 781 782 182.1
C 14 234 4143 18.46 781 782 182.1
C 15 208 2823 11.21 781 782 182.1
D 10 199 168307 908.31 767 747 184.5
D 14 34 142273 767.18 767 747 184.5
D 10 50 109448 589.25 767 747 184.5

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