ASTROSAT CZTI

Data Quality Report

Orbit 22275

Creation date: 2024-06-27T18:38:51.965050
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_018T08_9000003296_22275cztM0_level2.evt modeM0/AS1A07_018T08_9000003296_22275cztM0_level2_quad_clean.evt
Size (bytes)477,596,16068,904,000
Size455.5 MB 65.7 MB
Events in quadrant A3,328,490421,518
Events in quadrant B3,450,687437,346
Events in quadrant C3,457,700405,658
Events in quadrant D3,798,598381,087

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136332
B0140772
C0141352
D0153022

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6314250.395946%
B6314500.791891%
C63141081.710485%
D63141372.169781%

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 7634 6315 0 0 0.00% 0.00%
B 7634 6315 5 5 0.07% 0.08%
C 7634 6315 15 15 0.20% 0.24%
D 7634 6314 119 119 1.56% 1.88%

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 13 254 9059 47.82 864 850 171.6
A 0 226 7428 38.32 864 850 171.6
A 3 137 7070 36.24 864 850 171.6
B 3 64 40043 241.21 868 850 162.5
B 4 171 18967 111.5 868 850 162.5
B 12 111 18882 110.98 868 850 162.5
C 14 238 134500 702.88 823 833 190.2
C 10 22 111901 584.05 823 833 190.2
C 13 61 5699 25.59 823 833 190.2
D 1 52 465482 2398.72 811 789 193.7
D 2 136 176830 908.71 811 789 193.7
D 13 104 36793 185.85 811 789 193.7

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