ASTROSAT CZTI

Data Quality Report

Orbit 04777

Creation date: 2024-06-27T14:46:50.804650
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/AS1G05_218T05_9000000602_04777cztM0_level2.evt modeM0/AS1G05_218T05_9000000602_04777cztM0_level2_quad_clean.evt
Size (bytes)560,577,60076,602,240
Size534.6 MB 73.1 MB
Events in quadrant A2,954,899490,340
Events in quadrant B3,101,571490,252
Events in quadrant C4,907,432447,190
Events in quadrant D5,584,495449,730

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131463
B0135102
C0188872
D0209482

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6330150.236967%
B6330260.410742%
C633071211.248025%
D63302473.902054%

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 7660 6331 5 5 0.07% 0.08%
B 7660 6331 4 4 0.05% 0.06%
C 7660 6331 574 574 7.49% 9.07%
D 7660 6331 164 164 2.14% 2.59%

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 8 15 62222 414.57 737 722 148.3
A 0 50 33921 223.79 737 722 148.3
A 0 226 7790 47.64 737 722 148.3
B 4 80 139284 974.71 750 734 142.1
B 14 167 23200 158.05 750 734 142.1
B 15 204 14490 96.77 750 734 142.1
C 14 48 2168512 13493.1 689 693 160.7
C 1 16 34954 213.25 689 693 160.7
C 9 237 9789 56.62 689 693 160.7
D 11 132 2240779 13070.43 712 692 171.4
D 13 235 193756 1126.49 712 692 171.4
D 2 234 154070 894.93 712 692 171.4

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