ASTROSAT CZTI

Data Quality Report

Orbit 37173

Creation date: 2024-06-27T21:36:30.231743
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/AS1A11_079T01_9000005284_37173cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37173cztM0_level2_quad_clean.evt
Size (bytes)443,554,56081,175,680
Size423.0 MB 77.4 MB
Events in quadrant A2,825,543546,518
Events in quadrant B2,857,149547,668
Events in quadrant C3,128,377529,193
Events in quadrant D4,285,606486,919

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113433
B0114762
C0123062
D0160072

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4956170.343019%
B4956450.907990%
C4956571.150121%
D49563396.840194%

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 7049 4957 5 5 0.07% 0.10%
B 7049 4957 17 17 0.24% 0.34%
C 7049 4957 47 47 0.67% 0.95%
D 7049 4957 323 323 4.58% 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 10 83 251819 1930.57 652 642 130.1
A 9 143 26550 199.13 652 642 130.1
A 13 6 12923 94.39 652 642 130.1
B 5 172 105257 865.7 638 627 120.9
B 0 190 61399 502.82 638 627 120.9
B 4 232 54222 443.44 638 627 120.9
C 15 214 216213 1512.72 618 623 142.5
C 10 49 203985 1426.92 618 623 142.5
C 0 10 159695 1116.15 618 623 142.5
D 10 253 930875 6300.29 615 601 147.7
D 2 249 205719 1389.16 615 601 147.7
D 12 6 163103 1100.55 615 601 147.7

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