ASTROSAT CZTI

Data Quality Report

Orbit 44736

Creation date: 2024-06-27T23:05:53.710604
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_004T11_9000006018_44736cztM0_level2.fits modeM0/AS1A13_004T11_9000006018_44736cztM0_level2_quad_clean.evt
Size (bytes)596,220,480110,257,920
Size568.6 MB 105.2 MB
Events in quadrant A7,945,587701,348
Events in quadrant B4,160,863778,841
Events in quadrant C3,197,594758,673
Events in quadrant D6,240,992627,041

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0284342
B0169652
C0143912
D0232822

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A677882612.186486%
B67782233.290056%
C6778530.781942%
D677885912.673355%

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 7958 6779 553 553 6.95% 8.16%
B 7958 6779 104 104 1.31% 1.53%
C 7958 6779 21 21 0.26% 0.31%
D 7958 6779 638 638 8.02% 9.41%

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 15 223 2975319 19642.82 731 716 151.4
A 10 83 2089540 13793.57 731 716 151.4
A 10 248 21639 138.17 731 716 151.4
B 0 189 761556 5129.2 760 737 148.3
B 4 171 169714 1139.19 760 737 148.3
B 5 172 59769 397.97 760 737 148.3
C 14 254 184625 1040.49 755 762 176.7
C 3 233 29763 164.12 755 762 176.7
C 12 2 16756 90.51 755 762 176.7
D 1 52 1860651 10508.18 705 686 177.0
D 8 129 525628 2965.75 705 686 177.0
D 13 249 480151 2708.82 705 686 177.0

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