ASTROSAT CZTI

Data Quality Report

Orbit 17801

Creation date: 2024-06-27T17:41:03.551166
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/AS1A05_015T01_9000002650_17801cztM0_level2.evt modeM0/AS1A05_015T01_9000002650_17801cztM0_level2_quad_clean.evt
Size (bytes)467,755,20091,316,160
Size446.1 MB 87.1 MB
Events in quadrant A3,103,183588,063
Events in quadrant B3,315,830601,203
Events in quadrant C3,353,352580,918
Events in quadrant D3,971,682561,344

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134013
B0141032
C0140442
D0162502

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6214641.029932%
B6215901.448109%
C62151312.107804%
D62152714.360418%

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 8544 6216 11 11 0.13% 0.18%
B 8545 6217 13 13 0.15% 0.21%
C 8545 6217 20 20 0.23% 0.32%
D 8545 6217 181 181 2.12% 2.91%

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 15 174 49431 306.11 794 778 158.9
A 0 226 6810 37.95 794 778 158.9
A 12 194 5802 31.61 794 778 158.9
B 4 48 38375 249.87 802 785 150.4
B 0 230 37987 247.29 802 785 150.4
B 3 64 27758 179.29 802 785 150.4
C 9 54 122892 677.33 775 781 180.3
C 14 238 121888 671.76 775 781 180.3
C 3 233 46922 255.94 775 781 180.3
D 7 238 949550 5181.42 770 752 183.1
D 12 110 25133 133.15 770 752 183.1
D 2 234 24697 130.76 770 752 183.1

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