ASTROSAT CZTI

Data Quality Report

Orbit 13056

Creation date: 2024-06-27T16:35:51.426034
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_045T01_9000001920_13056cztM0_level2.evt modeM0/AS1G08_045T01_9000001920_13056cztM0_level2_quad_clean.evt
Size (bytes)571,443,84083,364,480
Size545.0 MB 79.5 MB
Events in quadrant A3,231,990544,554
Events in quadrant B7,072,554483,129
Events in quadrant C2,865,784560,121
Events in quadrant D3,732,673521,798

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132902
B0248921
C0121971
D0147771

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5936601.010782%
B5936260643.901617%
C5936150.252695%
D59361472.476415%

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 7257 5939 20 20 0.28% 0.34%
B 7257 5938 1448 1448 19.95% 24.39%
C 7257 5939 2 2 0.03% 0.03%
D 7257 5939 108 108 1.49% 1.82%

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 191834 1304.89 729 713 146.5
A 15 174 65751 444.05 729 713 146.5
A 12 189 44234 297.14 729 713 146.5
B 4 239 3211347 36678.17 464 453 87.5
B 0 85 1928585 22025.13 464 453 87.5
B 0 219 59155 670.56 464 453 87.5
C 14 234 10706 59.49 730 738 167.6
C 13 61 5207 26.67 730 738 167.6
C 12 4 5205 26.66 730 738 167.6
D 1 52 934240 5509.89 713 695 169.4
D 8 195 42261 245.33 713 695 169.4
D 7 223 27157 156.18 713 695 169.4

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