ASTROSAT CZTI

Data Quality Report

Orbit 49848

Creation date: 2024-12-16T09:57:50.650249
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_49848cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49848cztM0_level2_quad_clean.evt
Size (bytes)2,782,759,680119,946,240
Size2.6 GB 114.4 MB
Events in quadrant A32,842,312705,927
Events in quadrant B10,899,8271,500,349
Events in quadrant C25,548,018126,038
Events in quadrant D32,523,738209,861

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03140
B03140
C03140
D03140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01082160
B0433520
C0866730
D01071470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A154801082069.896641%
B1548011167.209302%
C154801521398.275194%
D1547915479100.000000%

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 15724 15479 10112 10112 64.31% 65.33%
B 15725 15481 732 732 4.66% 4.73%
C 15724 15479 4001 4001 25.45% 25.85%
D 15724 15479 10165 10165 64.65% 65.67%

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 0 98 16211918 68120.24 931 908 238.0
A 4 4 3411888 14333.27 931 908 238.0
A 3 84 2171404 9120.64 931 908 238.0
B 0 229 2414309 7154.02 1592 1537 337.3
B 4 206 528676 1563.0 1592 1537 337.3
B 4 190 311105 917.89 1592 1537 337.3
C 1 44 4653235 61895.48 179 173 75.2
C 15 147 3485001 46355.51 179 173 75.2
C 15 236 2420149 32190.75 179 173 75.2
D 8 129 10614653 52731.48 325 295 201.3
D 7 61 3428288 17030.06 325 295 201.3
D 7 60 1845218 9165.46 325 295 201.3

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