ASTROSAT CZTI

Data Quality Report

Orbit 23509

Creation date: 2024-06-27T18:55:27.504148
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/AS1A07_112T01_9000003478_23509cztM0_level2.evt modeM0/AS1A07_112T01_9000003478_23509cztM0_level2_quad_clean.evt
Size (bytes)697,749,12076,023,360
Size665.4 MB 72.5 MB
Events in quadrant A3,516,671510,199
Events in quadrant B3,904,277513,700
Events in quadrant C3,596,824494,305
Events in quadrant D9,647,909303,521

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144202
B0156532
C0145943
D0332012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68851261.830065%
B68861802.613999%
C68851582.294844%
D6885233833.957879%

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 7910 6885 0 0 0.00% 0.00%
B 7911 6886 22 22 0.28% 0.32%
C 7910 6885 14 14 0.18% 0.20%
D 7910 6885 2211 2211 27.95% 32.11%

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 4 2 26666 142.48 905 887 180.9
A 13 254 11940 61.09 905 887 180.9
A 0 226 7892 38.72 905 887 180.9
B 0 189 210822 1248.12 887 865 168.2
B 0 219 62513 366.47 887 865 168.2
B 0 229 50358 294.22 887 865 168.2
C 14 238 135735 678.47 855 863 198.8
C 8 208 47445 234.33 855 863 198.8
C 0 10 42172 207.8 855 863 198.8
D 1 52 6184256 35752.29 703 681 173.0
D 9 85 637597 3682.53 703 681 173.0
D 2 153 71804 411.22 703 681 173.0

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