ASTROSAT CZTI

Data Quality Report

Orbit 40538

Creation date: 2024-06-27T22:17:18.449575
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/AS1A12_006T09_9000005546_40538cztM0_level2.fits modeM0/AS1A12_006T09_9000005546_40538cztM0_level2_quad_clean.evt
Size (bytes)396,676,80091,779,840
Size378.3 MB 87.5 MB
Events in quadrant A3,191,936642,462
Events in quadrant B2,933,518653,601
Events in quadrant C2,753,683621,267
Events in quadrant D5,345,746450,104

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130843
B0126562
C0120372
D0199342

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5885110.186916%
B5885500.849618%
C588590.152931%
D5885150725.607477%

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 7198 5886 5 5 0.07% 0.08%
B 7198 5886 27 27 0.38% 0.46%
C 7198 5886 4 4 0.06% 0.07%
D 7197 5885 502 502 6.98% 8.53%

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 553755 4167.53 644 631 132.7
A 12 189 96000 718.56 644 631 132.7
A 3 1 16404 118.84 644 631 132.7
B 15 85 166824 1337.38 638 619 124.3
B 0 156 101135 808.81 638 619 124.3
B 3 112 88818 709.7 638 619 124.3
C 15 214 258624 1749.25 623 626 147.5
C 10 20 24750 163.56 623 626 147.5
C 0 10 18804 123.25 623 626 147.5
D 2 250 1185039 8637.38 551 536 137.1
D 12 227 1075976 7842.09 551 536 137.1
D 12 6 284895 2073.54 551 536 137.1

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