ASTROSAT CZTI

Data Quality Report

Orbit 49863

Creation date: 2024-12-17T01:45:34.250251
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/AS1A13_037T01_9000006440_49863cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49863cztM0_level2_quad_clean.evt
Size (bytes)3,080,911,680118,595,520
Size2.9 GB 113.1 MB
Events in quadrant A37,855,483472,023
Events in quadrant B10,567,2841,821,795
Events in quadrant C29,804,7625,218
Events in quadrant D34,383,12613,812

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03740
B03740
C03740
D03740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01252153
B0442983
C01014903
D01149993

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A185281395075.291451%
B185295743.097847%
C185291849199.794916%
D185291840999.352367%

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 19672 18527 11454 11454 58.22% 61.82%
B 19674 18532 273 273 1.39% 1.47%
C 19673 18528 4648 4648 23.63% 25.09%
D 19673 18529 5532 5532 28.12% 29.86%

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 4 4 19748348 64473.2 1129 1095 306.3
A 0 98 5705128 18623.21 1129 1095 306.3
A 6 35 1995631 6512.0 1129 1095 306.3
B 4 206 1035699 2461.12 1972 1904 420.1
B 4 171 370421 877.31 1972 1904 420.1
B 4 216 286899 678.48 1972 1904 420.1
C 4 111 6700632 75398.77 163 153 88.9
C 15 236 5175604 58238.02 163 153 88.9
C 15 230 3698673 41618.49 163 153 88.9
D 7 61 12777831 95211.58 267 247 134.2
D 8 129 11603331 86459.85 267 247 134.2
D 15 185 1701426 12676.26 267 247 134.2

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