ASTROSAT CZTI

Data Quality Report

Orbit 28950

Creation date: 2024-06-27T19:58:26.008022
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/AS1A10_123T08_9000004152_28950cztM0_level2.evt modeM0/AS1A10_123T08_9000004152_28950cztM0_level2_quad_clean.evt
Size (bytes)602,173,440107,092,800
Size574.3 MB 102.1 MB
Events in quadrant A3,050,458734,247
Events in quadrant B3,187,363771,327
Events in quadrant C3,227,937736,879
Events in quadrant D8,351,508568,016

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130062
B0133092
C0134412
D0290952

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6192140.226098%
B6192360.581395%
C6192991.598837%
D6192188830.490956%

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 7542 6191 0 0 0.00% 0.00%
B 7542 6191 7 7 0.09% 0.11%
C 7542 6191 0 0 0.00% 0.00%
D 7542 6191 1816 1816 24.08% 29.33%

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 13 254 10991 64.97 790 775 157.2
A 3 137 7216 40.96 790 775 157.2
A 0 226 6554 36.75 790 775 157.2
B 10 245 40179 267.71 802 783 147.2
B 12 111 17508 113.65 802 783 147.2
B 11 111 16012 103.49 802 783 147.2
C 14 238 144061 801.6 775 782 178.7
C 3 233 26224 142.34 775 782 178.7
C 14 254 25436 137.93 775 782 178.7
D 1 52 2703727 17530.09 655 639 154.2
D 8 195 1820423 11801.68 655 639 154.2
D 7 80 635824 4119.31 655 639 154.2

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