ASTROSAT CZTI

Data Quality Report

Orbit 50662

Creation date: 2025-02-08T20:12:53.593421
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/AS1T05_241T01_9000006446_50662cztM0_level2.fits modeM0/AS1T05_241T01_9000006446_50662cztM0_level2_quad_clean.evt
Size (bytes)797,328,000106,807,680
Size760.4 MB 101.9 MB
Events in quadrant A10,786,877619,761
Events in quadrant B6,657,731751,445
Events in quadrant C6,701,352660,784
Events in quadrant D4,762,782656,041

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0373024
B0251942
C0253182
D0195872

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7840156319.936224%
B78407549.617347%
C78406728.571429%
D78402403.061224%

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 9085 7842 1285 1285 14.14% 16.39%
B 9085 7842 433 433 4.77% 5.52%
C 9085 7842 506 506 5.57% 6.45%
D 9085 7842 168 168 1.85% 2.14%

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 80 6350154 31736.75 811 789 200.1
A 9 191 220543 1098.42 811 789 200.1
A 12 250 216632 1078.87 811 789 200.1
B 3 249 666207 3784.76 826 797 175.8
B 0 229 611038 3470.97 826 797 175.8
B 4 206 538831 3060.27 826 797 175.8
C 15 1 1295354 5714.52 814 807 226.5
C 0 224 671530 2960.77 814 807 226.5
C 15 174 338165 1489.2 814 807 226.5
D 2 153 367625 1625.63 824 798 225.7
D 2 249 196639 867.89 824 798 225.7
D 7 110 160576 708.07 824 798 225.7

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