ASTROSAT CZTI

Data Quality Report

Orbit 51732

Creation date: 2025-04-21T21:40:19.894563
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_090T01_9000006464_51732cztM0_level2.fits modeM0/AS1A13_090T01_9000006464_51732cztM0_level2_quad_clean.evt
Size (bytes)824,771,520113,140,800
Size786.6 MB 107.9 MB
Events in quadrant A6,038,237845,044
Events in quadrant B5,189,420857,286
Events in quadrant C4,834,046760,243
Events in quadrant D13,878,830433,156

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232790
B0205760
C0196820
D0465065

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76203194.186352%
B76212343.070463%
C76212062.703057%
D7620403652.965879%

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 7620 7620 270 270 3.54% 3.54%
B 7621 7621 182 182 2.39% 2.39%
C 7621 7621 175 175 2.30% 2.30%
D 7619 7619 3806 3806 49.95% 49.95%

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 12 3 844340 3824.77 862 843 220.5
A 0 111 807734 3658.79 862 843 220.5
A 4 175 197287 890.76 862 843 220.5
B 4 174 491533 2704.33 838 811 181.5
B 4 206 218031 1197.08 838 811 181.5
B 10 254 179870 986.78 838 811 181.5
C 13 3 411950 1776.42 820 812 231.4
C 12 249 170708 734.08 820 812 231.4
C 3 233 155612 668.85 820 812 231.4
D 11 129 10398246 58218.66 610 586 178.6
D 7 159 205417 1146.89 610 586 178.6
D 2 249 156921 875.35 610 586 178.6

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