ASTROSAT CZTI

Data Quality Report

Orbit 24123

Creation date: 2024-06-27T19:02:40.818455
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/AS1A07_134T02_9000003568_24123cztM0_level2.evt modeM0/AS1A07_134T02_9000003568_24123cztM0_level2_quad_clean.evt
Size (bytes)1,209,340,800219,309,120
Size1.1 GB 209.1 MB
Events in quadrant A8,276,5691,384,261
Events in quadrant B8,630,2321,397,188
Events in quadrant C8,556,9451,344,036
Events in quadrant D9,977,9411,310,426

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03560
B03560
C03560
D03560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360734
B0368714
C0366014
D0417074

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A174991500.857192%
B174992141.222927%
C174982731.560178%
D174982841.623043%

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 19469 17501 0 0 0.00% 0.00%
B 19469 17502 13 13 0.07% 0.07%
C 19468 17501 19 19 0.10% 0.11%
D 19468 17501 173 173 0.89% 0.99%

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 26987 57.93 2136 2089 429.8
A 2 250 25531 54.54 2136 2089 429.8
A 3 1 24624 52.43 2136 2089 429.8
B 0 190 79236 190.27 2121 2065 405.6
B 4 171 61825 147.34 2121 2065 405.6
B 12 111 50089 118.41 2121 2065 405.6
C 14 238 321413 666.97 2041 2052 478.8
C 10 9 121820 250.13 2041 2052 478.8
C 7 247 119824 245.96 2041 2052 478.8
D 8 195 799529 1565.04 2072 2009 509.6
D 1 52 588720 1151.35 2072 2009 509.6
D 12 233 337432 658.23 2072 2009 509.6

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