ASTROSAT CZTI

Data Quality Report

Orbit 05745

Creation date: 2024-06-27T14:58:36.714734
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/AS1A02_149T01_9000000740_05745cztM0_level2.evt modeM0/AS1A02_149T01_9000000740_05745cztM0_level2_quad_clean.evt
Size (bytes)450,907,20055,241,280
Size430.0 MB 52.7 MB
Events in quadrant A3,351,373308,105
Events in quadrant B3,424,361312,666
Events in quadrant C3,249,117310,111
Events in quadrant D3,195,952294,726

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138563
B0140462
C0136052
D0136502

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64001101.718750%
B6400570.890625%
C6400210.328125%
D6400430.671875%

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 7710 6401 54 54 0.70% 0.84%
B 7710 6401 3 3 0.04% 0.05%
C 7710 6401 0 0 0.00% 0.00%
D 7710 6401 18 18 0.23% 0.28%

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 15 236 185937 1115.14 821 804 166.0
A 0 226 8071 43.77 821 804 166.0
A 12 194 7873 42.58 821 804 166.0
B 4 81 81225 508.07 835 819 158.3
B 11 51 37999 234.93 835 819 158.3
B 15 204 34502 212.83 835 819 158.3
C 9 16 109655 593.64 793 799 183.4
C 8 128 16043 83.13 793 799 183.4
C 14 67 15559 80.49 793 799 183.4
D 2 206 76708 396.14 786 764 191.7
D 12 110 49486 254.14 786 764 191.7
D 11 241 33292 169.67 786 764 191.7

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