ASTROSAT CZTI

Data Quality Report

Orbit 14651

Creation date: 2024-06-27T16:58:01.640355
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/AS1G08_076T02_9000002164_14651cztM0_level2.evt modeM0/AS1G08_076T02_9000002164_14651cztM0_level2_quad_clean.evt
Size (bytes)675,973,44092,833,920
Size644.7 MB 88.5 MB
Events in quadrant A8,866,099564,831
Events in quadrant B3,484,993602,712
Events in quadrant C3,903,301584,058
Events in quadrant D3,745,852572,667

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0312093
B0148322
C0159922
D0160302

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69885527.899256%
B6988350.500859%
C6988220.314825%
D6988931.330853%

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 8619 6991 132 132 1.53% 1.89%
B 8619 6991 3 3 0.03% 0.04%
C 8619 6991 0 0 0.00% 0.00%
D 8619 6990 37 37 0.43% 0.53%

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 0 23 4039032 23933.55 823 805 168.7
A 0 253 1200213 7108.59 823 805 168.7
A 0 226 260445 1538.82 823 805 168.7
B 0 189 49770 306.12 837 816 159.9
B 4 142 23021 138.85 837 816 159.9
B 0 219 22842 137.73 837 816 159.9
C 3 233 746037 3988.55 805 810 186.8
C 13 61 5785 26.63 805 810 186.8
C 3 234 5122 23.08 805 810 186.8
D 15 0 250507 1190.1 803 784 209.8
D 12 110 128669 609.46 803 784 209.8
D 10 199 108019 511.05 803 784 209.8

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