ASTROSAT CZTI

Data Quality Report

Orbit 46718

Creation date: 2024-06-27T23:26:47.207982
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_9000006256_46718cztM0_level2.fits modeM0/AS1A13_037T01_9000006256_46718cztM0_level2_quad_clean.evt
Size (bytes)545,512,320105,966,720
Size520.2 MB 101.1 MB
Events in quadrant A6,863,841707,654
Events in quadrant B3,713,148739,188
Events in quadrant C3,509,264699,614
Events in quadrant D5,594,830601,407

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0249372
B0155302
C0150162
D0212222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66053645.510977%
B66051952.952309%
C66051512.286147%
D660576611.597275%

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 7645 6605 62 62 0.81% 0.94%
B 7645 6605 53 53 0.69% 0.80%
C 7645 6605 52 52 0.68% 0.79%
D 7645 6605 574 574 7.51% 8.69%

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 3716359 23818.24 750 734 156.0
A 9 191 194572 1242.56 750 734 156.0
A 15 235 20546 127.0 750 734 156.0
B 4 171 386618 2613.53 752 728 147.7
B 0 198 61497 411.57 752 728 147.7
B 0 245 52143 348.22 752 728 147.7
C 5 250 230855 1319.35 738 743 174.4
C 12 2 161594 922.24 738 743 174.4
C 3 233 125619 715.98 738 743 174.4
D 1 52 2048837 11375.95 715 693 180.0
D 14 34 286079 1585.11 715 693 180.0
D 13 171 160787 889.21 715 693 180.0

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