ASTROSAT CZTI

Data Quality Report

Orbit 10639

Creation date: 2024-06-27T16:01:50.626031
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/AS1T01_191T01_9000001536_10639cztM0_level2.evt modeM0/AS1T01_191T01_9000001536_10639cztM0_level2_quad_clean.evt
Size (bytes)459,233,28078,897,600
Size438.0 MB 75.2 MB
Events in quadrant A2,828,147508,888
Events in quadrant B3,717,475507,910
Events in quadrant C3,598,501499,695
Events in quadrant D3,376,603473,713

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121062
B0146941
C0147601
D0137591

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5699110.193016%
B56991723.018073%
C5699801.403755%
D5699601.052816%

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 7029 5700 0 0 0.00% 0.00%
B 7029 5700 84 84 1.20% 1.47%
C 7029 5700 66 66 0.94% 1.16%
D 7029 5700 37 37 0.53% 0.65%

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 13 251 81269 554.86 704 691 145.2
A 1 162 15110 99.29 704 691 145.2
A 15 174 7324 45.68 704 691 145.2
B 4 239 847248 6335.91 704 689 133.6
B 0 214 57710 426.76 704 689 133.6
B 0 219 50930 376.02 704 689 133.6
C 4 254 938822 5991.68 679 685 156.6
C 14 234 8135 47.58 679 685 156.6
C 13 61 5107 28.24 679 685 156.6
D 8 195 337755 2093.11 667 650 161.1
D 2 16 166336 1028.76 667 650 161.1
D 1 52 165431 1023.14 667 650 161.1

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